A rank in the RAF, between that of wing commander and air commodore, equivalent to an army colonel

An advocacy group.

An advocacy group.

An organised group of people who use various forms of advocacy to influence public opinion and policy.

An advocacy group.

(phylogenetics) The living representatives of a collection of species, together with their ancestors back to their most recent common ancestor as well as all of that ancestor's descendants.

(physics) A mathematical apparatus that allows systematic investigation of the changes of a physical system as viewed at different distance scales.

plural of free group

plural of group action

An encounter group or similar group therapy method.