• (n.) The act of yawning or gaping.
Synonym: yawning. ... Origin: L. Oscitatio ... (05 Mar 2000) ... 
(os″ĭ-ta´shәn) yawning.
Os`ci·ta'tion noun [ Latin oscitatio : confer French oscitation .] The act of yawning or gaping. Addison. 
Type: Term Pronunciation: os′i-tā′shŭn Synonyms: yawning
Oscitation: The act of yawning, the involuntary opening of the mouth with respiration, breathing first inward, then outward. Yawning is often caused by suggestion. Repeated yawning is commonly a sign of drowsiness. It can also sometimes be a sign of depression.
oscitation The act of yawning, the involuntary opening of the mouth with respiration, breathing first inward, then outward.