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pygidium

American  
[pahy-jid-ee-uhm] / paɪˈdʒɪd i əm /

noun

Zoology.
pygidia plural
  1. any of various structures or regions at the caudal end of the body in certain invertebrates.


pygidium British  
/ -ˈɡɪd-, paɪˈdʒɪdɪəm /

noun

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

"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

Other Word Forms

Derived Forms

Inflected Forms

noun

Etymology

Origin of pygidium

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The trilobite spans 146 meters from cephalon to pygidium, or head to tail, and is carved into the shape of a spiny Ceraurus trilobite instead of the plainer state fossil, Calymene.

From Science Magazine • Sep. 22, 2017

Median notch: in Coccidae, a notch in the edge of the pygidium, at the posterior extremity of the body.

From Explanation of Terms Used in Entomology by Smith, John. B.

Squames: the flattened, fimbriated or spine-like marginal processes of the pygidium in Diaspinae, other than the lobes and true spines: = "plates," of Comst.; or "scaly hairs" of Maskell.

From Explanation of Terms Used in Entomology by Smith, John. B.

The relation in size between the flea and its pygidium.

From Scientific American Supplement, No. 470, January 3, 1885 by Various

Lobe: any prominent rounded process or excrescence on a margin: specifically, the rounded, tooth-like processes on the margin of the pygidium of the Diaspinae: also applied to lateral expansions of the abdominal segments.

From Explanation of Terms Used in Entomology by Smith, John. B.

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