noun, plural py·gid·i·a [pahy-jid-ee-uh] /paɪˈdʒɪd i ə/. Zoology.
any of various structures or regions at the caudal end of the body in certain invertebrates.
Origin of pygidium
1840–50; < New Latin < Greek pȳg(ḗ) rump + -idion diminutive suffixRelated formspy·gid·i·al, adjective
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for pygidium
Historical Examples of pygidium
All indications are that the spine was not in any sense a pygidium.
It and the pygidium are due solely to functional requirements.
Pygidium and part of the thorax, with some of the appendages.
Appendages of the thorax and pygidium, seen from the dorsal side.
The appendages of the thorax and pygidium, seen from the lower side.
British Dictionary definitions for pygidium
noun plural -ia (-ɪə)
Derived Formspygidial, adjective
the terminal segment, division, or other structure in certain annelids, arthropods, and other invertebrates
Word Origin for pygidium
C19: from New Latin, from Greek pugē rump
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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