2531. A group of two feet is called a _dipody_, one of three a
_tripody_, one of four a _tetrapody_, one of five a _pentapody_, and one
of six a _hexapody_. The dipody is the measure of trochaic, iambic, and
anapaestic verse. Other kinds of verse are measured by the single foot.
A single foot is sometimes called a _monopody_. A group of three half
feet, i.e. a foot and a half, is sometimes called a _trithemimeris_, one
of two and a half feet a _penthemimeris_, one of three and a half a
_hephthemimeris_, &c.
2532. A _Rhythmical Series_, _Rhythmical Sentence_, or _Colon_ is a
group of two or more feet (but not more than six) which are united into
a rhythmic whole by strengthening one of the ictuses, so that it becomes
the principal or dominant ictus of the whole group.
2533. THE VERSE. A rhythmical series, or group of two (or even three)
series, which forms a distinct and separate whole is called a _Verse_.
The final syllable of a verse must terminate a word (except in cases of
synapheia, see 2510), and may be either long or short (whence it is
termed _syllaba anceps_) without regard to the rhythm. Hiatus (2474) is
freely allowed at the end of a verse (though in rare cases elision
occurs before a vowel at the beginning of the following verse; see 2492
and 2568).
A verse is generally (but not always) written as one line. Hence, the
words “verse” and “line” are often used as synonyms.