Meaning

noun a periodical that is published every quarter (or four issues per year)

adjective of or relating to or consisting of a quarter

adverb in diagonally opposed quarters of an escutcheon

originEtymology tree English quarter Proto-Indo-European *leyg-der. Proto-Germanic *līkąder. Proto-Germanic *-līkaz Proto-Germanic *-ê Proto-Germanic *-līkê Proto-West Germanic *-līkē Old English -līċe Middle English -ly English -ly English quarterly From quarter + -ly (adverbial suffix).

Etymology from Wiktionary, CC BY-SA 3.0