(mathematics) An irrational number that is the solution of a quadratic equation of the form ax²+bx+c=0, where a, b, and c are integers and a ≠ 0.

plural of white-throated kingfisher

(music) In Hindustani classical music, the fast-paced conclusion of a raga, often characterized by the overwhelming of the melodic component by the rhythmic component.

(zoology) Any of a number of swimming decapod crustaceans that clean other organisms of parasites.