An interdisciplinary collaboration of researchers working on new research activities that would be difficult to develop under traditional funding mechanisms, such as federal agencies.

(group theory) A group that has a presentation without relators; equivalently, a free product of some number of copies of ℤ.

(mathematics) Any discrete group of isometries of the hyperbolic plane.

(organic chemistry) Any chemical entity that is temporarily reacted with a functional group so as to protect it from a subsequent reaction

(chemistry) A functional group that is in close proximity to another that is taking part in a reaction; especially such a functional group that affects the rate or outcome of the reaction

(chemistry) An atom or group that is detached from the rest of a molecule during a reaction.

(marketing) The primary group of people that something, usually an advertising campaign, is designed to appeal to.

plural of front group

A front organization that appears to be an independent voluntary association or charitable organization.

Alternative spelling of demogroup