hemera

noun hem·era \ ˈhemərə \

Definition of hemera

plural hemerae \-ə(ˌ)rē\ also hemera
1 :a stratigraphic zone comprising the time range of a particular fossil species
2 :a period of time during which a race of organisms is at the apex of its evolution

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Origin and Etymology of hemera

New Latin, from Greek hēmera day; akin to Greek ēmar day, Armenian aur


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