Etymology

approximant

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Today it means: A consonant sound made by slightly narrowing the vocal tract, while still allowing a smooth flow of air. Liquids and glides are approximants. Full definition →

Latin approximāns
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The story

  1. Latin · borrowed fromapproximāns
  2. English todayapproximant

From Latin approximāns. In the phonetics sense first used by Peter Ladefoged, the mathematical concept is attributed to Paul Halmos.

Etymology from Wiktionary, CC BY-SA 4.0.