A liquid outpouring. / (chemistry) Process of gases passing through a hole or holes considerably smaller than the mean free path of the gas molecules.

plural of effusion

Gushy; unrestrained, extravagant or excessive (in emotional expression). / (archaic) Pouring, spilling out freely; overflowing.

In an effusive manner.

Poured out freely; profuse. / Disposed to pour out freely; prodigal. / (botany) Spreading loosely, especially on one side.

(transitive) To emit; to give off. / (figuratively) To gush; to be excitedly talkative and enthusiastic about something. / (intransitive) To pour out like a stream or freely; to cause to exude; to shed.

(obsolete) effusion; loss

The state of being effusive.

simple past tense and past participle of effuse

Third-person singular simple present indicative form of effuse