0 a unit of rhythm in poetry, consisting of one short syllable that is not stressed followed by one long one that is stressed, for example in the word "describe" --
The poem contains only a single instance of medial inversion (the reversal of an iamb in the middle of a line), which was common in his earlier works.
There are five stressed syllables per line, with varying feet and occasional lines of iamb.
Here, "iamb" refers to an unstressed syllable followed by a stressed syllable.
Thus, iambic pentameter is a meter comprising five feet per line, in which the predominant kind of foot is the iamb.
A siir or cheer is a type of metrical foot that roughly corresponds to an iamb.
Except for lines two and five (each an iamb) and lines eight and nine (each an amphibrach), no two lines have the same metrical form.
In this case, each iamb is underscored with a flap step.
This means that every ranking that produces lengthening in trochees also produces lengthening in iambs, but some rankings that produce lengthening in iambs do not produce lengthening in trochees.
