Letting pass without notice

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1580s, from Latin pretermissionem (nominative pretermissio ), noun of action from past participle stem of praetermittere (see pretermit ).

Wiktionary Word definitions in Wiktionary
n. 1 omission (act of omitting to do something) 2 preterition

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Pretermission \Pre`ter*mis"sion\, n. [L. praetermissio. See Pretermit .] The act of passing by or omitting; omission. --Milton. (Rhet.) See Preterition .

WordNet Word definitions in WordNet
n. letting pass without notice