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(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.) 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.
reagent (plural reagents)
Internationalism; compare English reagent. By surface analysis, re- + agent; however, the term agent does not have a chemical meaning.
reagent m inan
Learned borrowing from Latin reagens.
reagent m (plural reagenți)