a seething or overflowing, as of passion or feeling; outburst.
2.
the state of being ebullient.
3.
the act or process of boiling up.
4.
a rushing forth of water, lava, etc., in a state of agitation.
Origin: 1525–35; < L ēbullītiōn- (s. of ēbullītiō), equiv. to ēbullīt(us) (ptp. of ēbullīre to boil up ēbullī- (see ebullient) + -tus ptp. suffix) + -iōn--ion
A sudden, violent outpouring, as of emotion: "did not . . . give way to any ebullitions of private grief"(Thackeray).
[Middle English ebullitioun, from Late Latin ēbullītiō, ēbullītiōn-, from Latin ēbullītus, past participle of ēbullīre, to bubble up; see ebullient.] eb'ul·li'tion·al adj.