Dictionary.com
definitions

accentual

[ak-sen-choo-uh l]
adjective
  1. of or relating to accent or stress.
  2. Prosody. of or relating to poetry based on the number of stresses, as distinguished from poetry depending on the number of syllables or quantities.

Origin of accentual

1600–10; < Latin accentu(s) (see accent) + -al1
Related formsac·cen·tu·al·i·ty, nounac·cen·tu·al·ly, adverbnon·ac·cen·tu·al, adjectivenon·ac·cen·tu·al·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for accentually

accentual

adjective
  1. of, relating to, or having accents; rhythmic
  2. prosody of or relating to verse based on the number of stresses in a line rather than on the number of syllablesCompare quantitative (def. 3)
Derived Formsaccentually, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012