Ef‐fuse″ (?), a. [L. effusus, p. p. of effundere to pour out; ex + fundere to pour. See Fuse to melt.] 1. Poured out freely; profuse.
So should our joy be very effuse. Barrow.
2. Disposed to pour out freely; prodigal. Young.
3. (Bot.) Spreading loosely, especially on one side; as, an effuse inflorescence. Loudon.
4. (Zoöl.) Having the lips, or edges, of the aperture abruptly spreading; — said of certain shells.