Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* 1. sĕresco, ĕre, v. inch. n. [serenus], to grow dry: vestes serescunt (opp. uvescunt), Lucr. 1, 306.
* 2. sĕresco, ĕre, v. inch. n. [serum], to turn to whey: lac frigore serescit, Plin. 11, 41, 96, § 238.