PYGIDIA

Noun

pygidia

plural of pygidium

Anagrams

• iapygid

Source: Wiktionary

PYGIDIUM

Py*gid"i*um, n.; pl. Pygidia. Etym: [NL., fr. Gr. (Zoöl.)

Definition: The caudal plate of trilobites, crustacean, and certain insects. See Illust. of Limulus and Trilobite.

Source: Webster’s Unabridged Dictionary 1913 Edition