diurnation

diurnation: \\ˌdī(ˌ)ərˈnāshən\ noun (-s)
Etymology: Latin diurnus of the day, daily + English -ation (as in hibernation) — more at journal

1. : the habit of sleeping or being quiescent by day

the diurnation of bats

2. : a daily recurrent fluctuation in an ecological community (as the vertical movement of plankton)

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Diurnation — Di ur*na tion, n. 1. Continuance during the day. [Obs.] [1913 Webster] 2. (Zo[ o]l.) The condition of sleeping or becoming dormant by day, as is the case of the bats. [1913 Webster] … The Collaborative International Dictionary of English
diurnation — di·ur·na·tion … English syllables
diurnation — To sleep during the day … Grandiloquent dictionary
diurnal — a. daily; of a day or daylight; lasting one day; Botany, applied to flowers opening by day only. ♦ diurnation, n. sleeping or torpidity during daylight … Dictionary of difficult words

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