subunit

Noun

1. Any subdivision of a larger unit.
   • The bogies are built up of welded sub-units which are stress-relieved before assembly by riveting. - 1961 October, “New Metropolitan Line train sets enter service”, in Trains Illustrated, page 622:
   • Interchange manipulation comparisons showed that all subunits are still active, if at slightly lower rates. - 2007 September 25, Bungie, Halo 3, Microsoft Game Studios, Xbox 360, level/area: Terminal Three (Legendary):
   • UMISEA is a subunit in Hololive featuring idols with nautical themes. The group debuted in 2021 as the first JP+EN collab subunit. Chloe was added to the roster after holox debuted. - 2023 August 14, Brandon Lyttle,...
2. A protein subunit.