nonsteroidal anti-inflammatory is a noun meaning "an anti-inflammatory drug that does not contain steroids". It carries one recorded sense.
an anti-inflammatory drug that does not contain steroids
“NSAIDs inhibit the activity of both Cox-1 and Cox-2 enzymes”
Definitions, synonyms and semantic relations for nonsteroidal anti-inflammatory come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.