adj. & n.
adj. 1 of or relating to St Dominic or the order of preaching friars which he founded in 1215-16. 2 of or relating to either of the two orders of female religious founded on Dominican principles.
n. a Dominican friar, nun, or sister (see also Black Friar).
[ med.L Dominicanus f. Dominicus L name of Domingo de Guzm n (St Dominic) ]