Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
gca is a noun meaning "aircraft landing in bad weather in which the pilot is talked down by ground control using precision approach radar". It carries one recorded sense.
aircraft landing in bad weather in which the pilot is talked down by ground control using precision approach radar
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for gca come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.