[ad. L. effūs-us, pa. pple. of effundĕre to pour: see EFFUND.]

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  1.  Poured out freely; chiefly transf. and fig. wide-spreading, overflowing, unrestrained, extravagant. Obs. or arch.

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c. 1530.  H. Rhodes, Bk. Nurture, in Babees Bk. (1868), 105. If lyke a chylde, it [laughing] is effuse and wanton; if lyke a woman, foolish.

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1650.  Bulwer, Anthropomet., viii. (1653), 141. A Nation … whose Eares are dilated to so effuse a magnitude, that they cover the rest of their bodies with them.

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1655.  Bp. Richardson, On O. Test., 321 (T.). Where ever the body is, yet the heart of fooles is on effuse mirth.

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1742.  Young, Nt. Th., IX. 1086. No wanton waste amidst effuse expence.

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  2.  a. Bot. Of an inflorescence: Spreading loosely, especially on one side. b. Conch. Having the lips separated by a groove.

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1842.  Johnston, in Proc. Berw. Nat. Club, II. 31. B[ulla] catena,… aperture ampullaceous, effuse above.

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1870.  Hooker, Stud. Flora, 388. Iuncus glaucus … cymes effuse.

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