[pass.ing] n (14c): the act of one that passes or causes to pass; esp: death 1 -- in passing : by the way: incidentally
[2]passing adj (14c) 1: going by or past "a ~ pedestrian"
2: having a brief duration "a ~ whim" 3 obs: surpassing
4: superficial "a ~ acquaintance" "a ~ resemblance"
5. a: of, relating to, or used in or for the act or process of passing "~ lanes" b: given on satisfactory completion of an examination or course of study "a ~ grade" [3]passing adv (14c): to a surpassing degree: exceedingly "~ strange"