(composed of ἑπτά, seven, ἥμισυς, half, and μέρος, part), in the Greek and Latin poetry, a sort of verse consisting of three feet and a syllable; that is, of seven half feet.

Such are most of the verses in Anacreon:

Θέλω | λέγω | Αἴτημα | ἢ τις | Θέλω | δὲ Καὶ | πορεύεσθαι | ἢ τις, &c.

And that of Aristophanes, in his Plutus:

Εἰσελθὼν παρὰ τὴν ζώνην.

They are also called trimetri catalecticci.

or Hephtheimimeres, is also a caesura after the third foot; that is, on the seventh half-foot. It is a rule, that this syllable, though it be short in itself, must be made long on account of the caesura, or to make it an Hepthemimeris. As in that verse of Virgil,

Et furris agitatus amor, et conscia virtus.

It may be added, that the caesura is not to be on the fifth foot, as it is in the verse which Dr Harris gives us for an example:

Ille latus niveum mollis sultus Hyacintho.

This is not a hepthemimeris caesura, but a hennaeimeris, i.e. of nine half feet.