plural of outering

(transitive) To make (bacteria or other cells) more susceptible to the action of phagocytes by use of opsonins. / (intransitive) To become more susceptible to the action of phagocytes by use of ops...

(mathematics) An abstraction of distance; a function, d, with two arguments that satisfies d(x,x) = 0 and d(x, y) + d(y,z) ≥ d(x,z) (the triangle inequality) for all x,y,z in the domain.

A reddish variety of limestone.