(music) The minor key with A as its tonic, consisting of the pitches A, B, C, D, E, F, and G. / (music) The minor chord with a root of A.

(law) A child, a person who has not reached the age of majority, consent, etc. and is legally subject to fewer responsibilities and less accountability and entitled to fewer legal rights and privileges.

Used in a phrasal verb: minor in.

(music) the minor key with A as its tonic / (music) the minor chord with a root of A

(law) Underage, not having reached legal majority. / (medicine, sometimes figuratively) Not serious, not involving risk of death, permanent injury, dangerous surgery, or extended hospitalization.

A surname.

(Canada, US, education) To study as or qualify in a subsidiary subject at college or university.

(obsolete) Reduction; lessening. / (mathematics) Minorization.

plural of minorant

(mathematics) A function, all of whose values are not greater than the corresponding values of another function