\Proc`e*leus*mat"ic\, a. [L. proceleusmaticus,
Gr. ?, fr. ? to rouse to action beforehand; ? + ? to incite;
cf. F. proc['e]leusmatique.]
1. Inciting; animating; encouraging. [R.] --Johnson.
2. (Pros.) Consisting of four short syllables; composed of
   feet of four short syllables each.

\Proc`e*leus*mat"ic\, n. (Pros.)
A foot consisting of four short syllables.