ūmĕ-făcĭo

I. perf., factum, ĕre, 3, v. a. umeo-facio, to make moist, to moisten, wet (post-class.): de halitu terrae aut maris nebula exsistit, quae dispersa umefacit, quicquid texerit, Lact. de Ira Dei, 10: spongia crebro umefacta, Plin. 32. 10, 48, § 138.
Lewis & Short
A Latin Dictionary, 1879
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