adaptometr.
adaptometer (an optometric instrument that measures the minimum threshold of brightness that can be detected or how well the human eye can adapt to a recently darkened environment)
Meaning & usage
adaptometer (an optometric instrument that measures the minimum threshold of brightness that can be detected or how well the human eye can adapt to a recently darkened environment)
Where this word comes from
Etymology tree Proto-Indo-European *h₂éd Proto-Italic *ad Proto-Italic *ad- Latin ad- Proto-Indo-European *h₂ep- Proto-Indo-European *-tós Proto-Indo-European *h₂ptós Proto-Italic *aptos Latin aptus Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-yéti Proto-Indo-European *-eh₂yéti Proto-Indo-European *-h₂tiinflu. Proto-Italic *-ājō Proto-Italic *-āō Latin -ō Proto-Indo-European [Term?]der. Proto-Italic *apjō Latin apiō Proto-Indo-European *-tós Proto-Italic *-tos Latin -tus ▲ Latin -ō Latin -tō Latin aptō Latin adaptō Latin adaptareder. French adapter Proto-Indo-European *h₂euh₁-der.? Proto-Slavic *-ovati Old Polish -ować Polish -ować Polish adaptować Proto-Slavic *-o- Old Polish -o- Polish -o- Proto-Indo-European *meh₁- Proto-Indo-European *-tḗr Proto-Indo-European *-trom Proto-Hellenic *-tron Ancient Greek -τρον (-tron) Ancient Greek μέτρον (métron)der. Polish -metr Polish adaptometr From adaptować + -o- + -metr. First attested in 1923.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.