septenarius
sep·te·nar·i·us
(sĕp′tə-nâr′ē-əs)n. pl. sep·te·nar·i·i (-ē-ī′)
A Latin verse used only in comedy and consisting of seven feet, especially a catalectic iambic or trochaic tetrameter.
[Latin septēnārius, of seven, from septēnī, seven each, from septem, seven; see septennial.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
septenarius
(ˌsɛptəˈnɛərɪəs)n
any line of verse containing seven metrical feet
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014