The Collaborative International Dictionary
Exundate
Exundate \Ex*un"date\, v. i. [L. exundatus, p. p. of exundare to
overflow; ex out + undare. See Undated waved.]
To overflow; to inundate. [Obs.]
--Bailey.
Wiktionary
exundate
vb. (context obsolete English) To overflow; to inundate.