Standard Lemma guide

homothety

noun · 2 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

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1

noun

Meaning 1

An isotropic scaling transformation of an affine space with a single fixed point.

Definition source: English Wiktionary via Wiktextract

Topics: geometry, mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A homomorphism from a module M over a ring A to itself of the form ν:x↦ax for some fixed a∈A (especially when M=A; a is said to be the ratio of the homothety, by analogy with the geometric case).

Definition source: English Wiktionary via Wiktextract

Qualifier: commutative algebra

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From Ancient Greek ὁμο- (homo-, “same”) + θέσις (thésis, “setting, placement, arrangement”).

Across languages

Translations

9 source translations are retained for this English entry.

  • Esperanto: homotetio — scaling transformation
  • French: homothétie — scaling transformation
  • Galician: homotecia — scaling transformation
  • German: zentrische Streckung — scaling transformation
  • Italian: omotetia — scaling transformation
  • Polish: jednokładność — scaling transformation
  • Polish: homotetia — scaling transformation
  • Portuguese: homotetia — scaling transformation
  • Spanish: homotecia — scaling transformation