septenarius

 
Pronunciation: /ˌsɛptɪˈnɛːrɪəs/

noun (plural septenarii /-rɪʌɪ/)

Prosody
  • a verse line of seven feet, especially a trochaic or iambic tetrameter catalectic.

Origin:

early 19th century: from Latin, from septeni 'in sevens', from septem 'seven'