Pass″ing, a. 1. Relating to the act of passing or going; going by, beyond, through, or away; departing.
2. Exceeding; surpassing, eminent. Chaucer. “Her passing deformity.” Shak.
Passing note(Mus.), a character including a passing tone. — Passing tone(Mus.), a tone introduced between two other tones, on an unaccented portion of a measure, for the sake of smoother melody, but forming no essential part of the harmony.