METAMERE
metamere, somite
(noun) one of a series of similar body segments into which some animals are divided longitudinally
Source: WordNet® 3.1
Etymology
Noun
metamere (plural metameres)
(biology) One of successive or homodynamous parts in animals and plants; one of a series of similar parts that follow one another in a vertebrate or articulate animal, as in an earthworm; a segment or somite.
Source: Wiktionary
Met"a*mere, n. Etym: [Pref. meta- + -mere.] (Biol.)
Definition: One of successive or homodynamous parts in animals and plants;
one of a series of similar parts that follow one another in a
vertebrate or articulate animal, as in an earthworm; a segment; a
somite. See Illust. of Loeven's larva.
Source: Webster’s Unabridged Dictionary 1913 Edition