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

Seiko

せいこ

Given-name classification varies across source records.

せいこセイコSeiko
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 spellings79

group-level written forms

Source spelling/reading rows81

records contributing to this reading group

Coverage levelExtended

based only on the imported source footprint

Pronunciation & romanization

How to read Seiko

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せいこ

Normalized to hiragana for comparison.

Katakana formセイコ

The same reading converted to katakana.

RomanizationSeiko

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

Mora segmentationせ · い · こ

3 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 Seiko 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 readings3

せいこ · セイコ · セイこ

Kanji-based spellings79

among the forms analyzed on this page

Kana characters3

in the primary dictionary reading

Morae3

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

Kana-only2

recorded spellings

1-kanji forms2

recorded spellings

2-kanji forms60

recorded spellings

3-kanji forms17

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 asSurname

せいこ in the imported JMnedict corpus

Given-name written forms0

0 source spelling/reading rows

Surname written forms3

3 source spelling/reading rows

Given-name labels

row counts carrying each JMnedict source label

Exact readingGiven-name evidenceGiven-name labelsSurname evidence
せいごSeigo110113 source rowsmale 1 · female 72 · unspecified 40source rows · distinct forms: male 1 · female 70 · unspecified 4000 source rows
せいこSeiko00 source rowssource rows · distinct forms: —33 source rows
せいこSeiko00 source rowssource rows · distinct forms: —00 source rows
せいこSeiko00 source rowssource 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 Seiko

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 data79

3–29 strokes observed span

Median total strokes16

among forms with complete KANJIDIC2 stroke data

All-kanji name-classified forms75

all component kanji loaded as jōyō/jinmeiyō classes

Other/unclassified kanji forms4

contains at least one character outside that loaded classification

Recurring adjacent kanji sequences
以子3 analyzed forms依子3 analyzed forms生子2 analyzed forms伊子2 analyzed forms衣子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?

42 of 80 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 checked80

distinct spellings displayed on this page

Multiple recorded readings42

exact written forms with 2+ source readings

Single recorded reading36

within this active given-name corpus

Largest reading set12

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 Seiko 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
child, sign of the rat, 11PM-1AM55055003い, き, ぎ, く +2Jōyō · KANJIDIC grade 1
lake8080012うみ, みJōyō · KANJIDIC grade 3
holy, saint, sage8800013きよ, さと, さとし, せ +5Jōyō · KANJIDIC grade 6
forces, energy, military strength7700013Jōyō · KANJIDIC grade 5
generation, world, society660005とし, ゆ, ゆきJōyō · KANJIDIC grade 3
blue, green660008Jōyō · KANJIDIC grade 1
star, spot, dot440009Jōyō · KANJIDIC grade 2
by means of, because, in view of300305もちJōyō · KANJIDIC grade 4
reliant, depend on, consequently300308よ, よりJōyō · KANJIDIC grade 8
subjugate, attack the rebellious, collect taxes330008いく, そ, ただ, まさ +1Jōyō · KANJIDIC grade 8
correct, justice, righteous330005おお, くに, ま, まさし +1Jōyō · KANJIDIC grade 1
pure, purify, cleanse3300011あき, さや, し, すが +3Jōyō · 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.

Exact written form

せいこ

Source-recorded full-name readings in this name class
Seikoせいこ · this page
Characters in order
KanaKanaKana
Exact written form

セイコ

Source-recorded full-name readings in this name class
Seikoせいこ
Characters in order
KanaKanaKana

Showing research maps for the first 10 distinct written forms out of 81. 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 Seiko 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.

Same reading, different writing

Explore written forms of Seiko

81 source-recorded forms use the primary source reading せいこ. 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.

せいこ

せいこ · Seiko

Katakana セイコMorae 3Strokes

This written form uses kana rather than kanji, so there are no character-level kanji glosses to combine.

セイコ

セイコ · Seiko

Katakana セイコMorae 3Strokes

This written form uses kana rather than kanji, so there are no character-level kanji glosses to combine.

Showing the first 80 spelling/reading records out of 81 loaded records for this reading group. The group contains 79 distinct written spellings.

Spelling comparator

Compare Seiko 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
せいこせいこKana-only spellingKana spelling
セイコセイコKana-only spellingKana spelling
せい子せいこ子 — child, sign of the rat3All kanji jōyō/jinmeiyō-classified
セイ子セイこ子 — child, sign of the rat3All kanji jōyō/jinmeiyō-classified
世以子せいこ世 — generation, world · 以 — by means of, because · 子 — child, sign of the rat13All kanji jōyō/jinmeiyō-classified
世依子せいこ世 — generation, world · 依 — reliant, depend on · 子 — child, sign of the rat16All kanji jōyō/jinmeiyō-classified
世姫児せいこ世 — generation, world · 姫 — princess · 児 — newborn babe, child22All kanji jōyō/jinmeiyō-classified
世子せいこ世 — generation, world · 子 — child, sign of the rat8All kanji jōyō/jinmeiyō-classified
世生子せいこ世 — generation, world · 生 — life, genuine · 子 — child, sign of the rat13All kanji jōyō/jinmeiyō-classified
世緯子せいこ世 — generation, world · 緯 — horizontal, woof · 子 — child, sign of the rat24All kanji jōyō/jinmeiyō-classified
井子せいこ井 — well, well crib · 子 — child, sign of the rat7All kanji jōyō/jinmeiyō-classified
制子せいこ制 — system, law · 子 — child, sign of the rat11All kanji jōyō/jinmeiyō-classified
勢乙子せいこ勢 — forces, energy · 乙 — the latter, duplicate · 子 — child, sign of the rat17All kanji jōyō/jinmeiyō-classified
勢以子せいこ勢 — forces, energy · 以 — by means of, because · 子 — child, sign of the rat21All kanji jōyō/jinmeiyō-classified
勢伊子せいこ勢 — forces, energy · 伊 — Italy, that one · 子 — child, sign of the rat22All kanji jōyō/jinmeiyō-classified
勢位子せいこ勢 — forces, energy · 位 — rank, grade · 子 — child, sign of the rat23All 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 Seiko 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.

Continue research

Where to go next from Seiko

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

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 →