subgroup /ˈsʌbˌɡɹuːp/noun 2verb 1forms 3 noun2 •A group within a larger group; a group whose members are some, but not all, of the members of a larger group.The most important application of dysprosium and terbium, which belong to a subgroup known as the heavy rare earths, is in devices called neodymium boron magnets, or neo magnets for short. — 2025 •A subset H of a group G that is itself a group and has the same binary operation as G. verb1 •To divide or classify into subgroups formssubgrouped · subgrouping · subgroups
