Standard Lemma guide

isomorphism

noun · 8 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /ˌaɪsə(ʊ)ˈmɔɹfɪzəm/
  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -ɔː(ɹ)fɪzəm
  • CMU ARPABET: AY2 S AH0 M AO1 R F IH0 Z AH0 M Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

Similarity of form

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Similarity of form

the similarity in form of organisms, which may be due to convergent evolution or shared genetic background, e.g. an algae species in which the haploid and diploid life stages are indistinguishable based on morphology.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: biology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Similarity of form

the similarity in the crystal structures of similar chemical compounds.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

Similarity of form

the similarity in the structure or processes of different organizations.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: human-sciences, sciences, social-science, sociology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

A one-to-one correspondence

A bijection f such that both f and its inverse f−1 are homomorphisms, that is, structure-preserving mappings.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Qualifier: group algebra

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

A one-to-one correspondence

a one-to-one correspondence between all the elements of two sets, e.g. the instances of two classes, or the records in two datasets.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: computer, computing, engineering, mathematics, natural-sciences, physical-sciences, science, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

A one-to-one correspondence

A morphism which has a two-sided inverse; the composition of the morphism and such an inverse yields either one of two identity morphisms (depending on the order of composition).

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: category-theory, computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

noun

Meaning 8

(biology) similarity or identity of form or shape or structure

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: isomorphy

Antonyms: none provided

Broader terms: similarity

History

Etymology

From iso- + -morphism.

Across languages

Translations

31 source translations are retained for this English entry.

  • Bulgarian: изоморфи́зъм (izomorfízǎm) — the similarity in form of organisms of different ancestry
  • Czech: izomorfismus — the similarity in form of organisms of different ancestry
  • Finnish: isomorfismi — the similarity in form of organisms of different ancestry
  • French: isomorphisme — the similarity in form of organisms of different ancestry
  • Hungarian: izomorfizmus — the similarity in form of organisms of different ancestry
  • Italian: isomorfismo — the similarity in form of organisms of different ancestry
  • Polish: izomorfizm — the similarity in form of organisms of different ancestry
  • Portuguese: isomorfismo — the similarity in form of organisms of different ancestry
  • Russian: изоморфи́зм (izomorfízm) — the similarity in form of organisms of different ancestry
  • Serbo-Croatian: izomorfizam — the similarity in form of organisms of different ancestry
  • Spanish: isomorfismo — the similarity in form of organisms of different ancestry
  • Tagalog: kasanyuan — the similarity in form of organisms of different ancestry
  • Ukrainian: ізоморфі́зм (izomorfízm) — the similarity in form of organisms of different ancestry
  • Bulgarian: изоморфизъм (izomorfizǎm) — bidirectionally structure-preserving bijection
  • Chinese Mandarin: 同構 /同构 (tónggòu) — bidirectionally structure-preserving bijection
  • Czech: izomorfismus — bidirectionally structure-preserving bijection
  • Danish: isomorfi — bidirectionally structure-preserving bijection
  • Dutch: isomorfisme — bidirectionally structure-preserving bijection
  • Esperanto: izomorfio — bidirectionally structure-preserving bijection
  • Finnish: isomorfismi — bidirectionally structure-preserving bijection
  • French: isomorphisme — bidirectionally structure-preserving bijection
  • German: Isomorphismus — bidirectionally structure-preserving bijection
  • Hindi: तुल्याकारिता (tulyākāritā) — bidirectionally structure-preserving bijection
  • Hindi: समाकृतिकता (samākŕtiktā) — bidirectionally structure-preserving bijection
  • Hungarian: izomorfia — bidirectionally structure-preserving bijection
  • Icelandic: einsmótun — bidirectionally structure-preserving bijection
  • Kazakh: изоморфизм (izomorfizm) — bidirectionally structure-preserving bijection
  • Polish: izomorfizm — bidirectionally structure-preserving bijection
  • Portuguese: isomorfismo — bidirectionally structure-preserving bijection
  • Russian: изоморфизм (izomorfizm) — bidirectionally structure-preserving bijection
  • Spanish: isomorfismo — bidirectionally structure-preserving bijection
Real reading context

isomorphism in complete knowledge articles