ˈsämnələn(t)s noun
also som·no·len·cy -lənsē, -si
( plural somnolences also somnolencies )
Etymology: somnolence from Middle English sompnolence, from Middle French, from Late Latin somnolentia, from Latin somnolentus somnolent + -ia -y; somnolency from Late Latin somnolentia
: inclination to sleep : drowsiness , sleepiness — compare hypersomnia