Standard Lemma guide

yoctometre

noun · 1 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 SI unit of length equal to 10−24 metres. Symbol: ym

Definition source: English Wiktionary via Wiktextract

Topics: metrology

Examples

  • Holonyms: zeptometre < attometre < femtometre < picometre < nanometre < micrometre < millimetre < centimetre < decimetre < metre < kilometre < megametre < gigametre < terametre < petametre < exametre < zettametre < yottametre < ronnametre < quettametre

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From yocto- + metre.

Across languages

Translations

5 source translations are retained for this English entry.

  • Chinese Mandarin: 攸米 (yōumǐ) — SI unit of length
  • Chinese Mandarin: 幺米 (yāomǐ) — SI unit of length
  • Finnish: joktometri — SI unit of length
  • French: yoctomètre — SI unit of length
  • Russian: йоктометр (joktometr) — SI unit of length