As nouns the difference between tagma and metamere
is that tagma is a specialized grouping of arthropodan segments, such as the head, the thorax, and the abdomen with a common function while metamere is 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.
tagma
Noun
(tagmata)
(anatomy) A specialized grouping of arthropodan segments, such as the head, the thorax, and the abdomen with a common function.
metamere
English
Noun
(
en noun)
(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.