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Evidence-led referenceJapanese names, readings and kanji
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ReferenceNamesSeishirō
Canonical reference record
JMnedict-backedKANJIDIC2 character context
Japanese given name

Seishirō

征史郎

Male-classified given-name records.

せいしろうセイシロウSeishirō
Compare spellings
Reference coverage

Extended source depth

This reading group has a comparatively broad dictionary footprint across source-recorded spellings or records. The counts describe corpus coverage, not real-world popularity.

Distinct recorded spellings23

group-level written forms

Source spelling/reading rows23

records contributing to this reading group

Coverage levelExtended

based only on the imported source footprint

Pronunciation & romanization

How to read Seishirō

The kana reading is source-recorded. Romanization and mora segmentation are deterministic reading aids generated from that kana; pitch accent is not inferred.

Source readingせいしろう

Normalized to hiragana for comparison.

Katakana formセイシロウ

The same reading converted to katakana.

RomanizationSeishirō

Macron-style display. Vowel-sequence form: Seishirou. Personal spelling and true vowel boundaries can differ.

Mora segmentationせ · い · し · ろ · う

5 morae in this reading. Small ゃ/ゅ/ょ-type kana join the preceding mora.

Audio note: the play button uses Japanese text-to-speech provided by the visitor’s browser/device. It is a convenience preview, not a recorded native-speaker pronunciation or pitch-accent authority.

Reading profile

How Seishirō is represented

These counts describe records in the imported name corpus. They are not a ranking of how popular a spelling is among people in Japan.

Recorded kana readings1

せいしろう

Kanji-based spellings23

among the forms analyzed on this page

Kana characters5

in the primary dictionary reading

Morae5

small ゃ/ゅ/ょ-type kana combine with the preceding mora

3-kanji forms23

recorded spellings

JMnedict classification evidence

How this reading is classified in the source corpus

This separates dictionary classification from popularity. The same exact kana reading can be recorded as a given name, a surname, or both, and given-name records can carry male, female or unspecified source labels.

Primary reading recorded asNo additional class found

せいしろう in the imported JMnedict corpus

Given-name written forms0

0 source spelling/reading rows

Surname written forms0

0 source spelling/reading rows

Given-name labels—

row counts carrying each JMnedict source label

Exact readingGiven-name evidenceGiven-name labelsSurname evidence
せいじろうSeijirō8787 source rowsmale 87source rows · distinct forms: male 8700 source rows
せいしろうSeishirō00 source rows—source rows · distinct forms: —00 source rows

Classification boundary: male/female/unspecified are labels attached to imported JMnedict name records. They are not population shares, probabilities, identity claims, or evidence that a spelling is currently common in Japan. A source row can also be repeated across different written forms, so row counts and distinct-writing counts are shown separately.

Spelling anatomy

Corpus structure behind Seishirō

This section summarizes the exact source-recorded forms loaded for this reading group. Stroke and character-position statistics are descriptive corpus properties, not popularity or style scores.

Kanji forms with complete stroke data23

19–32 strokes observed span

Median total strokes26

among forms with complete KANJIDIC2 stroke data

All-kanji name-classified forms22

all component kanji loaded as jōyō/jinmeiyō classes

Other/unclassified kanji forms1

contains at least one character outside that loaded classification

Source-reading distribution
ReadingRomanizationMoraeForms
せいしろうSeishirō523
Recurring adjacent kanji sequences
四郎11 analyzed forms志郎4 analyzed forms史郎2 analyzed forms司郎2 analyzed forms士郎2 analyzed forms

Shown only when the same adjacent two-kanji sequence occurs in at least two analyzed source forms. Open a sequence in Kanji Pair Research for corpus co-occurrence context.

Reading ambiguity

Can the same writing be read another way?

4 of 23 displayed written forms have more than one given-name reading somewhere in the active JMnedict corpus. This is dictionary-record ambiguity, not a prediction of how a particular person reads the name.

Written forms checked23

distinct spellings displayed on this page

Multiple recorded readings4

exact written forms with 2+ source readings

Single recorded reading19

within this active given-name corpus

Largest reading set3

distinct kana readings for one displayed writing

A reading shown without a link is still source-recorded, but its destination group does not currently meet the canonical publication standard. Strong reference pages do not promote limited records merely to create extra internal links.

Kanji role reference

How recurring characters function across Seishirō spellings

Position counts are calculated only from the distinct written forms analyzed for this page. KANJIDIC2 nanori are character-level name-reading references; they are not used here to decompose or assert the reading of a specific multi-kanji name.

KanjiCharacter glossesFormsFirstFinalInternalSoloStrokesKANJIDIC2 nanoriLoaded class
郎son, counter for sons22022009いら, お, とう, もん +2Jōyō · KANJIDIC grade 8
四four11001105あ, つ, よつJōyō · KANJIDIC grade 1
誠sincerity, admonish, warn5500013きよ, さと, しげ, とも +4Jōyō · KANJIDIC grade 6
征subjugate, attack the rebellious, collect taxes440008いく, そ, ただ, まさ +1Jōyō · KANJIDIC grade 8
志intention, plan, resolve400407じん, べ, べし, ゆきJōyō · KANJIDIC grade 5
史history, chronicle300305あきら, あや, お, こ +7Jōyō · KANJIDIC grade 5
清pure, purify, cleanse3300011あき, さや, し, すが +3Jōyō · KANJIDIC grade 4
司director, official, govt office200205つ, つか, つかさJōyō · KANJIDIC grade 4
士gentleman, scholar, samurai200203お, まJōyō · KANJIDIC grade 5
精refined, ghost, fairy2200014きよJōyō · KANJIDIC grade 5
聖holy, saint, sage2200013きよ, さと, さとし, せ +5Jōyō · KANJIDIC grade 6
成turn into, become, get110006あき, あきら, しげ, そん +9Jōyō · KANJIDIC grade 4

Counts describe this source-recorded spelling set, not population use. A repeated kanji can contribute to more than one position role across different spellings.

Exact writing research map

Move from a spelling to its readings, characters and literal sequence context

These relationships are exact and source-backed. Whole-name readings shown in each card come from JMnedict within the current name class; exact-writing search can surface records from other name classes. Character links open KANJIDIC2-backed kanji pages. Sequence context means the same kanji string occurs contiguously in another recorded written form—it does not prove shared origin or meaning.

Showing research maps for the first 10 distinct written forms out of 23. Every detailed spelling card below still links to exact-writing search and its component kanji.

For VPS safety, contiguous-sequence lookups are limited to six 2–4 kanji forms per canonical page and cached for 12 hours per active JMnedict generation.

Corpus pattern

Kanji recurring across Seishirō spellings

Only characters appearing in at least two distinct analyzed spellings are shown here. Frequency describes this source-recorded spelling set, not real-world baby-name popularity.

郎son, counter for sons22 of 23 analyzed forms四four11 of 23 analyzed forms誠sincerity, admonish, warn5 of 23 analyzed forms征subjugate, attack the rebellious, collect taxes4 of 23 analyzed forms志intention, plan, resolve4 of 23 analyzed forms史history, chronicle3 of 23 analyzed forms清pure, purify, cleanse3 of 23 analyzed forms司director, official, govt office2 of 23 analyzed forms士gentleman, scholar, samurai2 of 23 analyzed forms精refined, ghost, fairy2 of 23 analyzed forms
Same reading, different writing

Explore written forms of Seishirō

23 source-recorded forms use the primary source reading せいしろう. Other source readings can appear in this romanized group when the imported records converge on the same index form. Use Compare to inspect exact spellings side by side.

Spelling comparator

Compare Seishirō forms side by side

Each exact written spelling appears once in this table even when JMnedict records more than one reading for that writing. Stroke totals and character glosses come from KANJIDIC2 when all component kanji are available.

SpellingOne source readingCharacter-level glossesTotal strokesLoaded character class
征史郎せいしろう征 — subjugate, attack the rebellious · 史 — history, chronicle · 郎 — son, counter for sons22All kanji jōyō/jinmeiyō-classified
征司郎せいしろう征 — subjugate, attack the rebellious · 司 — director, official · 郎 — son, counter for sons22All kanji jōyō/jinmeiyō-classified
征四郎せいしろう征 — subjugate, attack the rebellious · 四 — four · 郎 — son, counter for sons22All kanji jōyō/jinmeiyō-classified
征士郎せいしろう征 — subjugate, attack the rebellious · 士 — gentleman, scholar · 郎 — son, counter for sons20All kanji jōyō/jinmeiyō-classified
成四郎せいしろう成 — turn into, become · 四 — four · 郎 — son, counter for sons20All kanji jōyō/jinmeiyō-classified
整史朗せいしろう整 — organize, arranging · 史 — history, chronicle · 朗 — clear, bright32All kanji jōyō/jinmeiyō-classified
晴四郎せいしろう晴 — clear up · 四 — four · 郎 — son, counter for sons26All kanji jōyō/jinmeiyō-classified
正四郎せいしろう正 — correct, justice · 四 — four · 郎 — son, counter for sons19All kanji jōyō/jinmeiyō-classified
清司郎せいしろう清 — pure, purify · 司 — director, official · 郎 — son, counter for sons25All kanji jōyō/jinmeiyō-classified
清四郎せいしろう清 — pure, purify · 四 — four · 郎 — son, counter for sons25All kanji jōyō/jinmeiyō-classified
清志郎せいしろう清 — pure, purify · 志 — intention, plan · 郎 — son, counter for sons27All kanji jōyō/jinmeiyō-classified
盛四郎せいしろう盛 — boom, prosper · 四 — four · 郎 — son, counter for sons25All kanji jōyō/jinmeiyō-classified
精四郎せいしろう精 — refined, ghost · 四 — four · 郎 — son, counter for sons28All kanji jōyō/jinmeiyō-classified
精志郎せいしろう精 — refined, ghost · 志 — intention, plan · 郎 — son, counter for sons30All kanji jōyō/jinmeiyō-classified
聖四郎せいしろう聖 — holy, saint · 四 — four · 郎 — son, counter for sons27All kanji jōyō/jinmeiyō-classified
聖志郎せいしろう聖 — holy, saint · 志 — intention, plan · 郎 — son, counter for sons29All kanji jōyō/jinmeiyō-classified

The comparison table shows the first 16 distinct written forms; the detailed cards above show up to 80 spelling/reading records.

What does Seishirō mean?

There is not necessarily one fixed English meaning. The reading identifies the spoken name; different written forms can use different kanji. Character glosses describe individual kanji and should not be treated as proof of the intention behind a particular person’s name.

Related readings

More names beginning with せい

Related by the opening kana of the dictionary reading. This is a deterministic browsing relationship, not a claim that the names share the same meaning.

Given name · male · limited reference

Seiji

142 recorded spellings

Explore →Given name · male · limited reference

Seīchirō

104 recorded spellings

Explore →Given name · male · limited reference

Seigorō

98 recorded spellings

Explore →Given name · male · limited reference

Seinosuke

86 recorded spellings

Explore →Given name · female · limited reference

Seika

80 recorded spellings

Explore →Given name · female · limited reference

Seiko

79 recorded spellings

Explore →Given name · mixed records · limited reference

Seira

79 recorded spellings

Explore →Given name · mixed records · limited reference

Seiki

69 recorded spellings

Explore →Given name · male · limited reference

Seitarō

66 recorded spellings

Explore →Given name · male · limited reference

Seijirō

64 recorded spellings

Explore →Given name · female · limited reference

Seikō

64 recorded spellings

Explore →Given name · female · limited reference

Seishi

56 recorded spellings

Explore →
Continue research

Where to go next from Seishirō

Use literal reading, character and corpus relationships to continue without treating nearby records as automatically related.

Exact reading

Search せいしろう

See source records matching this kana reading or beginning with it.

Continue →Reading family

Se / せ

Browse other public given names with the same opening reading family.

Continue →Character reference

郎 — son, counter for sons

Open the kanji page for readings, classifications and literal name-use context.

Continue →Character reference

四 — four

Open the kanji page for readings, classifications and literal name-use context.

Continue →Interactive discovery

Open Name Explorer

Use the same name type and 5-mora reading length as a starting point.

Continue →
Evidence on this page

What each source establishes

JMnedict establishes recorded written forms, readings and name classifications; where safely associated, this page can also show JMnedict-supplied trans_det source text without treating it as a whole-name meaning. KANJIDIC2 supplies character readings, nanori, stroke counts, grade classes and English character glosses. The Ministry of Justice remains the official reference for Japanese child-name character rules. The Agency for Cultural Affairs romanization guidance is the reference for generated Latin-script reading aids.

JMnedictChecked 17 Sep 2026Active data built 16 Sep 2026Stored status: downloaded
KANJIDIC2Checked 17 Sep 2026Active data built 17 Sep 2026
Japan Ministry of Justice — characters usable in children’s namesChecked 17 Sep 2026
Japan Agency for Cultural Affairs — Romanization Rules (2025)Checked 17 Sep 2026
Source boundary

The spelling-frequency and structural counts on this page are calculated from imported JMnedict records. They are corpus counts, not population-frequency claims. KANJIDIC2 supplies the kanji metadata used in character and stroke comparisons.

Review sources →