n. 渗出, 分泌, 渗出物

[化] 渗出

[医] 渗出[作用], 渗出物

Exudation \Ex`u*da"tion\, n.
The act of exuding; sweating; a discharge of humors,
moisture, juice, or gum, as through pores or incisions; also,
the substance exuded.

Resins, a class of proximate principles, existing in
almost all plants and appearing on the external surface
of many of them in the form of exudations. --Am. Cyc.