AMPHIMACER
Source: 524, 567
AMPHIM'ACER, noun [Gr. long on both sides.]In ancient poetry, a foot of three syllables, the middle one short and the others long, as in castitas.
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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 cāst�tās. Andrews.