Meaning of "cyclooxygenase 2 selective inhibitor

a painkiller that works by inhibiting the enzyme cyclooxygenase-2 (COX-2), which triggers the release of prostaglandins.

COX-2 inhibitor

COX-2 inhibitor
n.
Any of a class of nonsteroidal anti-inflammatory drugs that selectively block prostaglandin formation so as to cause minimal gastrointestinal side effects.