Standard Lemma guide

zeptomole

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

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.

  • General-American: /ˈzɛptoʊˌmoʊl/
  • Received-Pronunciation: /ˈzɛptəʊˌməʊl/
  • US: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

10−21 mole, or about 600 molecules. SI symbol: zmol.

Definition source: English Wiktionary via Wiktextract

Usage: physical

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From zepto- + mole.

Across languages

Translations

4 source translations are retained for this English entry.

  • Finnish: zeptomooli — unit
  • French: zeptomole — unit
  • Japanese: ゼプトモル — unit
  • Russian: зептомо́ль (zeptomólʹ) — unit