Definition of microunit in English:

microunit

noun

Medicine
  • A millionth part of a unit of measurement; specifically one millionth of an international unit (as of insulin or other hormone).

Origin

Early 20th century; earliest use found in William Dorland (1864–1956), obstetrician. From micro- + unit [adjective].

Pronunciation

microunit

/ˈmʌɪkrə(ʊ)juːnɪt/