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say it: lahn-juh-TOO-duh-nuhl
longitudinal is an adjective meaning "of or relating to lines of longitude". It carries 3 recorded senses.
of or relating to lines of longitude
“longitudinal reckoning by the navigator”
running lengthwise
“a thin longitudinal strip”
“longitudinal measurements of the hull”
Definitions, synonyms and semantic relations for longitudinal come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.