Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
subtropic is an adjective meaning "of or relating to or characteristic of conditions in the subtropics". It carries one recorded sense.
of or relating to or characteristic of conditions in the subtropics
“even near the equator vegetation at 5000 ft is subtropical rather than tropical”
Definitions, synonyms and semantic relations for subtropic come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.