Standard Lemma guide

reagent

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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  • /ɹiˈeɪ.d͡ʒənt/
  • Canada: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: R IY0 EY1 JH AH0 N T Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
  • CMU ARPABET 2: R IY1 JH AH0 N T Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

A compound or mixture of compounds used to treat or test materials, samples, other compounds or reactants in a laboratory or sometimes an industrial setting.

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

2

noun

Meaning 2

a chemical agent for use in chemical reactions

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: chemical agent

History

Etymology

Possibly from Latin reagō. Compare with Norwegian Bokmål reagens. The sequence of act → action → agent → agency shows morphologic and semantic parallel, and apparent cognate relation, with react → reaction → reagent → reagency.

Across languages

Translations

34 source translations are retained for this English entry.

  • Armenian: ռեագենտ (ṙeagent) — substance used in chemical reactions
  • Armenian: ազդանյութ (azdanyutʻ) — substance used in chemical reactions
  • Bulgarian: реактив (reaktiv) — substance used in chemical reactions
  • Catalan: reactiu — substance used in chemical reactions
  • Chinese Mandarin: 試劑 /试剂 (shìjì) — substance used in chemical reactions
  • Czech: činidlo — substance used in chemical reactions
  • Dutch: reagens — substance used in chemical reactions
  • Finnish: reagenssi — substance used in chemical reactions
  • French: réactif — substance used in chemical reactions
  • German: Edukt — substance used in chemical reactions
  • German: Reagenz — substance used in chemical reactions
  • Ido: reaktivo — substance used in chemical reactions
  • Italian: reagente — substance used in chemical reactions
  • Italian: reattivo — substance used in chemical reactions
  • Japanese: 試薬 (shiyaku) — substance used in chemical reactions
  • Khmer: ប្រតិករ (praʼtekɑɑ) — substance used in chemical reactions
  • Khmer: ធាតុបន្ទាល់ (thiət bɑɑbɑntŏəl) — substance used in chemical reactions
  • Manx: ym-obbree — substance used in chemical reactions
  • Māori: matū tauhohe — substance used in chemical reactions
  • Norwegian Bokmål: reagens — substance used in chemical reactions
  • Norwegian Nynorsk: reagens — substance used in chemical reactions
  • Polish: reagent — substance used in chemical reactions
  • Polish: odczynnik — substance used in chemical reactions
  • Portuguese: reagente — substance used in chemical reactions
  • Portuguese: reativo — substance used in chemical reactions
  • Romanian: reactant — substance used in chemical reactions
  • Russian: реаге́нт (reagént) — substance used in chemical reactions
  • Russian: реакти́в (reaktív) — substance used in chemical reactions
  • Spanish: reactivo — substance used in chemical reactions
  • Swedish: reagens — substance used in chemical reactions
  • Tagalog: pamalibilos — substance used in chemical reactions
  • Turkish: reaktif — substance used in chemical reactions
  • Ottoman Turkish: معیار (miʼyâr) — substance used in chemical reactions
  • Vietnamese: thuốc thử — substance used in chemical reactions