different between xiphoid vs siphoid

English

From Ancient Greek ????????? (xiphoeid?s).

xiphoid (not comparable)

xiphoid (plural xiphoids)

(anatomy) The xiphoid process.
- 2000, Kurt Schwenk, Feeding: Form, Function and Evolution in Tetrapod Vertebrates (page 466)
  In Asian pangolins the xiphoids are shorter […]

Latin sipho (“a siphon”) + -oid.

siphoid (plural siphoids)

(dated) A siphon bottle.
- 1866, Charles Knight, Arts and sciences: or, Fourth division of "The English encyclopedia" (volume 1, page 113)
  Belonging to but detached from this is a vessel called a siphoid, to transfer the aerated liquid to a glass; the siphoid is filled from the large machine, and may then be emptied by glassfuls without any deterioration of quality.

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