1. Relating to or characteristic of the Italian poet Petrarch or his style of poetry, especially his idealized treatment of love and sonnet form
   "The Petrarchan sonnet was widely imitated in Renaissance Europe"

1. A follower or imitator of Petrarch's poetic style, particularly in the use of courtly love themes and sonnet form
   "Shakespeare was influenced by the Petrarchans who preceded him"

Encyclopedia: Petrarchan