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

(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

The state of being a minor; youth, the period of a person's life prior to reaching adulthood. / Any subgroup that does not form a numerical majority. / (US) A member of an ethnic minority.

(relational, attributive) Of or relating to a minority.

simple past tense and past participle of minor

present participle of minor

plural of minority

(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.