A minim is a musical note that has a time value equal to two crotchets or two quarter notes.
[British]regional note: in AM, use half note
minim in British English
(ˈmɪnɪm)
noun
1.
a unit of fluid measure equal to one sixtieth of a drachm. It is approximately equal to one drop
Symbol: M, ♏
2. music
a note having the time value of half a semibreve
Usual US and Canadian name: half-note
3.
a small or insignificant person or thing
4.
a downward stroke in calligraphy
adjective
5. rare
very small; tiny
Word origin
C15 (in its musical meaning): from Latin minimus smallest
minim in American English
(ˈmɪnɪm)
noun
1.
the smallest unit of liquid measure, equal to 1⁄60 fluid dram or about half a drop (0.0616 milliliter): the British and Canadian imperial minim equals 1⁄60 of an imperial fluid dram or 0.0592 milliliter
abbrev. min
2.
a tiny portion
3. Chiefly British
half note
adjective
4.
smallest; tiniest
Word origin
ME mynym (in sense minim (sense 3)) < L minimus, least: see minimum