Find the word definition

The Collaborative International Dictionary
Amphimacer

Amphimacer \Am*phim"a*cer\, n. [L. amphimacru?, Gr. ?; ? on both sides + ? long.] (Anc. Pros.) A foot of three syllables, the middle one short and the others long, as in c[=a]st?t[=a]s.
--Andrews. [1913 Webster] ||

Wiktionary
amphimacer

n. A metrical foot consisting of an unaccented syllable between two accented syllables; a cretic