Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
surface-to-air is an adjective meaning "operating from or designed to be launched from the ground against an airborne target". It carries one recorded sense.
operating from or designed to be launched from the ground against an airborne target
“surface-to-air missiles”
Definitions, synonyms and semantic relations for surface-to-air come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.