Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
allotropical is an adjective meaning "of or related to or exhibiting allotropism". It carries one recorded sense.
of or related to or exhibiting allotropism
“carbon and sulfur and phosphorus are allotropic elements”
Definitions, synonyms and semantic relations for allotropical come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .