\A*ces"cent\, a. [L. acescens, -entis, p. pr. of
acescere to turn sour; inchoative of acere to be sour: cf. F.
acescent. See {Acid}.]
Turning sour; readily becoming tart or acid; slightly sour.
--Faraday.

\A*ces"cent\, n.
A substance liable to become sour.