clarion

Origin

The noun is derived from Middle English clarion, clarioun (“trumpet with a narrow tube and a shrill sound, clarion; clarion player”) [and other forms], from Old French claron, clarïon (“clarion”) [and other forms], from Medieval Latin clāriōn, clario, clārōn (“clarion; trumpet”), from Latin clārus (“audible; clear, distinct, loud; (visually) bright, clear”), ultimately from Proto-Indo-European *kelh₁- (“to call, summon; to cry”). The adjective is from an attributive use of the noun.