The Second Pythiambic features an iambic trimeter instead of iambic dimeter in the second line. Anapaestic verse is always found in dimeters or tetrameters, each dimeter consisting of 4 feet. In poetry, a dimeter is a metrical line of verse with two feet. Iambic dimeter is a meter referring to a line consisting of two iambic feet. Dickinson avoids pentameter, opting more generally for trimeter, tetrameter and, less often, dimeter.