Standard Lemma guide

thiourea

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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  • General-American: /θaɪoʊjʊˈɹi.ə/
  • General-American: /-ˈjʊəɹi.ə/

1

noun

Meaning 1

Any of a class of compounds based on NH2-CS-NH2, formally derived from urea by replacing the oxygen atom with sulfur, used in photography as a fixing agent, in inorganic synthesis, and in medicine as an antithyroid drug.

Definition source: English Wiktionary via Wiktextract

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Etymology tree Proto-Indo-European *dhewh2-der.? Ancient Greek θέειον (théeion) Ancient Greek θεῖον (theîon)der. English thio- Proto-Indo-European *h1wers-der. Ancient Greek οὐρέω (ouréō) Ancient Greek οὖρον (oûron)der. French uréeder. New Latinder. English urea English thiourea From New Latin, 1890–95, thio- + urea.