microsleep

[ mahy-kroh-sleep ]
/ ˈmaɪ kroʊˌslip /

noun Psychology.

a moment of sleep followed by disorientation, experienced especially by persons suffering from narcolepsy or sleep deprivation.

Origin of microsleep

First recorded in 1940–45; micro- + sleep

British Dictionary definitions for microsleep

microsleep
/ (ˈmaɪkrəʊˌsliːp) /

noun

a period of sleep which is so momentary as to be imperceptible