Meanings
nounGCA (countable and uncountable, plural GCAs)
plural GCAs
- abbreviationcountableinitialismuncountablegraph theoryInitialism of greatest common ancestor.
- abbreviationcountableinitialismuncountableaeronauticsInitialism of ground-controlled approach.
- abbreviationcountableinitialismuncountablemedicineInitialism of giant cell arteritis.
Synonyms & antonyms
nounaircraft landing in bad weather in which the pilot is talked down by ground control using precision approach radar
Similar
ground-controlled approach
Broader
aircraft landingairplane landing
Synonym sets from Open English WordNet, CC BY 4.0.
Rhymes & wordplay
Anagrams
Cite this entry
APA
GCA. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/GCA
MLA
“GCA.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/GCA. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “GCA,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/GCA.
Source: GCA on Wiktionary, CC BY-SA 4.0.