A city and town in Iowa.

(category theory) A morphism from an object to the product of that object with itself, which morphism is induced by a pair of identity morphisms of the said object.

(geometry) A projection of a polytope from n-dimensional space to n-1 dimensions through a point beyond one of its faces; especially such a projection (itself represented in 2 dimensions) of a 3- or 4-dimensional polytope.

(dated) The provision of interactive video services, such as home shopping and films transmitted on demand, by traditional telecommunication networks.

(geometry, algebra) A Coxeter-Dynkin diagram.

hemochromatosis

A kind of diagram used to plot the positions of the poles and zeroes of a function in the complex plane.

Alternative form of runner's diarrhea

A condition among runners characterised by the urgent need for a relatively liquid bowel movement during a run.

plural of diamond bird