Main Entry: unit

Pronunciation: \ˈyü-nət\

Function: noun

1 : an amount of a biologically active agent (as a drug or antigen) required to produce a specific result under strictly controlled conditions <a unit of penicillin>—see international unit
2 : a small molecule especially when combined in a larger molecule <repeating units of a polymer>
3 : an area in a medical facility and especially a hospital that is specially staffed and equipped to provide a particular type of care <an intensive care unit>