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.