The Collaborative International Dictionary
Oscitation
Oscitation \Os`ci*ta"tion\, n. [L. oscitatio: cf. F.
oscitation.]
The act of yawning or gaping.
--Addison.
Douglas Harper's Etymology Dictionary
oscitation
1540s, from Late Latin oscitationem (nominative oscitatio), noun of action from past participle stem of oscitare (see oscitant).
Wiktionary
oscitation
n. The act of yawning or gape. Also figuratively.