say it: kuh-THEE-druhl
cathedral is a noun and adjective meaning "any large and important church". It carries 3 recorded senses.
any large and important church
relating to or containing or issuing from a bishop's office or throne
“a cathedral church”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for cathedral 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.