pygidium

[ pahy-jid-ee-uhm ]

Phonetic (Standard)IPA

noun

, Zoology.

, plural py·gid·i·a [pahy-, jid, -ee-, uh].

any of various structures or regions at the caudal end of the body in certain invertebrates.

pygidium

/ paɪˈdʒɪdɪəm; -ˈɡɪd- /

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

1840–50; < New Latin < Greek pȳg ( ḗ ) rump + -idion diminutive suffix

C19: from New Latin, from Greek pugē rump

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.

This same type of broad-bladed exopodite is also found on the thorax and pygidium.

April 18, 2024petrichor

[pet-ri-kawr]

Start each day with the Word of the Day in your inbox!

By clicking "Sign Up", you are accepting Dictionary.com Terms & Conditions and Privacy Policies.

Browse