quarterly Syllabification: (quar·ter·ly)Pronunciation: /ˈkwôrtərlē/Translate quarterly | into French | into German | into Italian | into Spanish Definition of quarterly adjective 1 [attributive] done, produced, or occurring once every quarter of a year:a quarterly newsletter is distributed to members 2 Heraldry (of a shield or charge) divided into four (or occasionally more) subdivisions by vertical and horizontal lines. adverb 1once every quarter of a year:interest is paid quarterly 2 Heraldry in the four, or in two diagonally opposite, quarters of a shield. [on the pattern of Old French quartile] noun (plural quarterlies) a magazine or journal that is published four times a year. quarterly in other Oxford dictionaries Definition of quarterly in the British & World English dictionary