UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈtɜːsɪt/, /tɜːˈsɛt/US:USA pronunciation: respellingUSA pronunciation: respelling(tûrsit, tûr set)

WordReference Random House Unabridged Dictionary of American English © 2020
ter•cet  (tûrsit, tûr set),USA pronunciation n. 
  1. Poetry[Pros.]a group of three lines rhyming together or connected by rhyme with the adjacent group or groups of three lines.
  2. Music and Dancetriplet (def. 5).
  • Latin tertius. See -et
  • Italian terzetto, diminutive of terzo third
  • French
  • 1590–1600

Collins Concise English Dictionary © HarperCollins Publishers::
tercet /ˈtɜːsɪt; tɜːˈsɛt/ n
  1. a group of three lines of verse that rhyme together or are connected by rhyme with adjacent groups of three lines
Etymology: 16th Century: from French, from Italian terzetto, diminutive of terzo third, from Latin tertius
'tercet' also found in these entries (note: many are not synonyms or translations):
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