pygidium

[ pahy-jid-ee-uhm ]

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 suffix

Other words from pygidium

py·gid·i·al, adjective

Words Nearby pygidium

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use pygidium in a sentence

All indications are that the spine was not in any sense a pygidium.
The Appendages, Anatomy, and Relationships of Trilobites | Percy Edward Raymond
It and the pygidium are due solely to functional requirements.
The Appendages, Anatomy, and Relationships of Trilobites | Percy Edward Raymond
pygidium and part of the thorax, with some of the appendages.
The Appendages, Anatomy, and Relationships of Trilobites | Percy Edward Raymond
Appendages of the thorax and pygidium, seen from the dorsal side.
The Appendages, Anatomy, and Relationships of Trilobites | Percy Edward Raymond
This same type of broad-bladed exopodite is also found on the thorax and pygidium.
The Appendages, Anatomy, and Relationships of Trilobites | Percy Edward Raymond

British Dictionary definitions for pygidium

pygidium

/ (paɪˈdʒɪdɪəm, -ˈɡɪd-) /

nounplural -ia (-ɪə)

the terminal segment, division, or other structure in certain annelids, arthropods, and other invertebrates

Origin of pygidium

C19: from New Latin, from Greek pugē rump

Derived forms of pygidium

pygidial, adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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