Lewis & Short

pūrŭlentus, a, um, adj. [pus], festering, mattery, purulent: cancer albus purulentus est, Cato, R. R. 157; Cels. 2, 8; Plin. 22, 11, 13, § 28; 27, 12, 105, § 130; Sen. Ep. 95, 26.
Absol.: pūrŭlenta, ōrum, n., corrupt matter, pus, Plin. 20, 2, 5, § 10; 20, 4, 13, § 26.
Adv.: pūrŭlentē, purulently, Plin. 23, prooem. 3, § 7.