(topology) A topological group whose underlying topology is both locally compact and Hausdorff.

plural of algebraic fundamental group

(algebraic geometry) A group which is an analogue for schemes of the fundamental group for topological spaces.

(dated, psychotherapy) A small encounter group meeting in a private home.

plural of living room group

(astronomy) A collection of galaxies designated as published by Paul Hickson in 1982.

plural of large quasar group

plural of non-capturing group

(military) A military unit of the armed forces which incorporates multiple branches of the military within a single command structure (also known as combined arms).

plural of large-group awareness training