Standard Lemma guide

kinetochore

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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  • UK: /k(ʌ)ɪˈniːtəʊkɔː/
  • US: /kəˈnitoʊkɔɹ/

1

noun

Meaning 1

The protein structure in eukaryotes which assembles on the centromere and links the chromosome to microtubule polymers from the mitotic spindle during mitosis.

Definition source: English Wiktionary via Wiktextract

Topics: biology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a specialized condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X shape

Definition source: Princeton WordNet 3.0

Examples

  • the centromere is difficult to sequence

Meaning relationships

Synonyms: centromere

Antonyms: none provided

Broader terms: structure, anatomical structure, complex body part, bodily structure, body structure

History

Etymology

From kineto- + Ancient Greek χῶρος (khôros, “space”).

Across languages

Translations

2 source translations are retained for this English entry.

  • French: kinétochore — Translations
  • Russian: кинетохо́р (kinetoxór) — Translations