noun
rareThe action or an act of yawning from drowsiness.
Origin
Mid 16th century; earliest use found in Andrew Borde (c1490–1549), physician and author. From classical Latin ōscitātiōn-, ōscitātiō the action of yawning from ōscitāt-, past participial stem of ōscitāre and ōscitārī + -iō.
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