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condenser

noun

  1. lens, mirror or mirror-lens optical system
L318462 on Wikidata ↗

Wiktionary

Pronunciation: /ˈkʰəndɛnsɚ/

noun

Etymology: Etymology tree English condense Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English condenser From condense + -er.

  1. A device designed to condense a gas into a liquid, either as part of a still, steam engine, refrigerator or similar machine.
  2. A capacitor.
  3. A lens (or combination of lenses) designed to gather light and focus it onto a specimen or part of a mechanism.
  4. A dental instrument used to pack filling into a cavity in a tooth.