say it: AN-thuhm
anthem is a noun meaning "a song of devotion or loyalty (as to a nation or school)". It carries 2 recorded senses.
a song of devotion or loyalty (as to a nation or school)
a song of praise (to God or to a saint or to a nation)
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 anthem 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.