Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
microscopical is an adjective meaning "of or relating to or used in microscopy". It carries 3 recorded senses.
of or relating to or used in microscopy
“microscopic analysis”
“microscopical examination”
visible under a microscope; using a microscope
so small as to be invisible without a microscope
“differences were microscopic”
Definitions, synonyms and semantic relations for microscopical come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.