O-mis'sion, n.

(o-mĭsh'un), n. [Lat. omissio, Fr. omission, Sp. omision, It. omissione, ommissione. See OMIT.] 1. The act of leaving out; the neglect or failure to do something required by propriety or duty. The most natural division of all offenses is into those of omission and those of commission. Addison. 2. That which is omitted or left out; as, an important omission.