Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
hygroscopic is an adjective meaning "absorbing moisture (as from the air)". It carries one recorded sense.
absorbing moisture (as from the air)
Definitions, synonyms and semantic relations for hygroscopic come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.