(algebraic geometry) Having four dimensions; being measurable along four mutually perpendicular axes.

plural of disjunctor

(transitive) To divest or deprive of a cowl (monk's hood or hooded robe). / (transitive, figuratively, archaic) To uncover; to unveil. / (instransitive) To remove or pull back one's cowl.

(organic chemistry) A red quinoid carboxylic acid 3-carboxymethyl-5-hydroxy-1,4,8-trioxo-4,8-dihydro-1H-fluorene-9-carboxylic acid present in the skin secretion of the hippopotamus