Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
arenaceous is an adjective meaning "resembling or containing or abounding in sand; or growing in sandy areas". It carries one recorded sense.
resembling or containing or abounding in sand; or growing in sandy areas
“arenaceous limestone”
“arenaceous grasses”
Definitions, synonyms and semantic relations for arenaceous come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.