(mathematics) An incomplete metric space with an inner product.

Alternative form of pre-Hilbert space

(mathematics) An algebraic system used in quantum mechanics to describe quantum states with a variable or unknown number of particles.

A species of finch Padda oryzivora, native of Java, but very commonly kept as a cage bird.

Alternative form of sparrowgrass

Alternative form of sparrowgrass

(topology) A topological space for which any pair of distinct points are also topologically distinct, i.e., there is an open set which contains one of the points but not the other one.

guest room

(plural only, historical) The southern part of the Low Countries (modern Netherlands and Belgium) during and after the Eighty Years' War, ruled by Spain and lasting from 1581 to 1713.

plural of spam relay