(dated, organic chemistry) Any of several classes of (mostly heterocyclic) compounds derived from urea

(chemistry) Any compound, of general formula R-CO-NH-CO-NH₂ or R-CO-NH-CO-NH-CO-R', formally derived by the acylation of urea.

plural of ureide

plural of ureid

(medicine) Any of a class of penicillin antibiotics in which an amino group has been replaced by a urea moiety.

plural of ureidopenicillin

(chemistry) Ureylene. / (chemistry) Containing the univalent radical NH₂CONH–