1. non-op - Noun
2. non-op - Adjective
Nonoperational; not functioning.
(medicine) Nonoperative; not using or requiring surgical treatment.
(LGBT, of a transgender or transsexual person) Having chosen not to undergo sex reassignment surgery.
Synonym: no-op
(rail transport) Nonoperating; not directly involved in the mechanical operation of trains.
(LGBT) A transsexual or transgender person who has chosen not to undergo sex reassignment surgery.
Synonym: no-op
(rail transport) A nonoperator; a rail worker not directly involved in the mechanical operation of trains.
Source: en.wiktionary.org