facial recognition is a noun meaning "biometric identification by scanning a person's face and matching it against a library of known faces". It carries one recorded sense.
biometric identification by scanning a person's face and matching it against a library of known faces
“they used face recognition to spot known terrorists”
terrorism
Definitions, synonyms and semantic relations for facial recognition come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.