Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
cross-section is an adjective meaning "representing a plane made by cutting across something at right angles to its length". It carries one recorded sense.
representing a plane made by cutting across something at right angles to its length
“cross-section views of the neck”
Definitions, synonyms and semantic relations for cross-section come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.