pyriformis

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UK/ˌpɪ.ɹɪˈfɔː.mɪs/US/ˌpɪɹ.əˈfɔɹ.mɪs/

A form of piriformis — A gluteal muscle which arises from the front of the sacrum and the ischium or sacrotuberous ligament, passes out of the pelvis through the greater sciatic foramen, and inserts into the greater trochanter of the femur, serving in humans to rotate the thigh laterally.

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Meanings

nounpyriformis (plural pyriformes)

plural pyriformes

  1. alternativeAlternative spelling of piriformis.

Origin

  1. Latinpyrifōrmis
  2. Englishpyriformis

Unadapted borrowing from Latin pyrifōrmis, ellipsis of mūsculus pyrifōrmis (“pear-shaped muscle”). Doublet of pyriform.

Full word history & related roots →
Cite this entry
APA

pyriformis. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/pyriformis

MLA

“pyriformis.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/pyriformis. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “pyriformis,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/pyriformis.

Source: pyriformis on Wiktionary, CC BY-SA 4.0.