Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
parasitical is an adjective meaning "relating to or caused by parasites". It carries 2 recorded senses.
of plants or persons; having the nature or habits of a parasite or leech; living off another
“a wealthy class parasitic upon the labor of the masses”
“parasitic vines that strangle the trees”
“bloodsucking blackmailer”
“his indolent leechlike existence”
Definitions, synonyms and semantic relations for parasitical come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.