
a Greek and Latin metrical foot consisting of long, short, and long syllables / ' ~ ' / (cf. the English word 'forty-five'). An example is Alfred lord Tennyson's 'The Oak.' See under foot below.
Found on
http://rpo.library.utoronto.ca/display_rpo/terminology.cfm#acatalectic

• (n.) A foot of three syllables, the middle one short and the others long, as in cast/tas.
Found on
http://thinkexist.com/dictionary/meaning/amphimacer/

A three-syllable foot consisting of a heavy, light, and heavy stress. Poetry written in amphimacers
Found on
http://www.encyclo.co.uk/local/22385

A greek and latin metrical foot consisting of long, short, and long syllables / ' ~ ' / (cf. The eng
Found on
http://www.encyclo.co.uk/local/22429
Am·phim'a·cer noun [ Latin
amphimacru... , Greek ...; ... on both sides + ... long.]
(Anc. Pros.) A foot of three syllables, the middle one short and the others long, as in
cāst...tās .
Andrews. Found on
http://www.encyclo.co.uk/webster/A/73

a trisyllabic foot, the arrangement of the syllables of which is long, short, long in quantitative meter, or stressed, unstressed, stressed in accentual meter, as anodyne, an accentual amphimacer.
Found on
https://www.infoplease.com/dictionary/amphimacer
No exact match found.