subunit

noun sub·unit \ ˈsəb-ˌyü-nət \
variants: or less commonly sub-unit

Definition of subunit

plural subunits also sub-units
: a unit that is part of a larger unit : a subdivision of a unit
  • In the U.S. Army's case … the smallest subunit is the squad (nine to twelve individuals under a sergeant).
  • —Norman Friedman
  • Because of a quirk in the replicative machinery, when a strand of DNA is duplicated during mitosis, a few subunits at one end are always lost.
  • —John Rennie

First Known Use of subunit

1852

in the meaning defined above

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Medical Dictionary

subunit

noun sub·unit \ ˈsəb-ˌyü-nət \

medical Definition of subunit

: a unit that forms a discrete part of a more comprehensive unit
  • subunits of a protein

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