Of or relating to Francesco Petrarch, a renowned Renaissance Italian humanist.

(literature) The influential style of Petrarch.

(poetry) A sonnet comprising an octet and a closing sestet, following the rhyme scheme of either abba abba cde cde or abba abba cd cd cd or abba abba cce dde or abba abba cdd cee.

plural of Petrarchan sonnet