Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
rock-inhabiting is an adjective meaning "of ferns and lichens that grow on rocks". It carries one recorded sense.
of ferns and lichens that grow on rocks
Definitions, synonyms and semantic relations for rock-inhabiting come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.