n. [ L. omissio: cf. F. omission. See Omit. ] 1. The act of omitting; neglect or failure to do something required by propriety or duty. [ 1913 Webster ]
The most natural division of all offenses is into those of omission and those of commission. Addison. [ 1913 Webster ]
2. That which is omitted or is left undone. [ 1913 Webster ]