nDipody(Pros) Two metrical feet taken together, or included in one measure."Trochaic, iambic, and anapestic verses . . . are measured by dipodies ."
Century Dictionary and Cyclopedia
dipodyIn prosody, a group of two like feet; a double foot; especially, a pair of feet constituting a single measure. A dipody is marked as a unit by making the ictus of one of the two feet stronger than that of the other. In ancient prosody iambi and trochees are regularly, and anapests usually, measured by dipodies. Sometimes the word syzygy is used as equivalent to dipody.