offshoot
n.something that grows or develops from a larger thing. It can be a physical part of a plant or a new idea that comes from an older one.
n.a secondary growth or development that arises from a primary source. Often used to describe a branch of a plant or a derivative concept, organization, or movement.
“The new company is an offshoot of the original firm.”
“The local community garden was an offshoot of a national initiative to promote urban farming.”
“The political movement began as a minor offshoot of the larger party but eventually gained enough momentum to challenge the establishment.”
“In 1982 Stein launched an offshoot above another pub, the Latchmere in Battersea, where I still recall Susannah York as the Amazonian protagonist of Kleist’s Penthesilea.”
From off- + shoot.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.