Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
cŏāgŭlāre, is, n. [coagulo] (sc. intestinum), the colon, Veg. 8, 16, 1 al.
cŏāgŭlo, āvi, ātum (contr. COAGLAVI, Inscr. ap. Anthol. Lat. 1177 Meyer), 1, v. a. [coagulum], to cause a fluid to curdle or coagulate (mostly in the elder Pliny): lac, Plin. 12, 25, 54, § 123; 20, 14, 53, § 147: picem, id. 16, 11, 22, § 53; v. Sillig N. cr.: aquam, id. 20, 23, 97, § 259: sudorem, id. 35, 15, 52, § 186: caseum, Pall. Mai, 9, 1 al.