Standard Lemma guide

katal

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

In the International System of Units, the derived unit of catalytic activity; one mole per second. Symbol: kat.

Definition source: English Wiktionary via Wiktextract

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 Ancient Greek κατάλυσις (katálusis, “dissolution”), from καταλύω (katalúō, “I dissolve”), from κατά (katá, “down”) + λύω (lúō, “I loose”).

Across languages

Translations

8 source translations are retained for this English entry.

  • Czech: katal — derived unit of catalytic activity
  • Esperanto: katalo — derived unit of catalytic activity
  • Greek: κατάλ (katál) — derived unit of catalytic activity
  • Indonesian: katal — derived unit of catalytic activity
  • Malay: katal — derived unit of catalytic activity
  • Polish: katal — derived unit of catalytic activity
  • Russian: катал (katal) — derived unit of catalytic activity
  • Thai: คาทัล (kaa-taan) — derived unit of catalytic activity