Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
colorimetrical is an adjective meaning "of or relating to colorimetry". It carries one recorded sense.
of or relating to colorimetry
Definitions, synonyms and semantic relations for colorimetrical come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .