Xiphisternal
the lowermost of the three segments of the sternum.
compare gladiolus (def 2), manubrium (def 2a).
historical examples
the vertebrate skeleton sidney h. reynolds
noun (pl) -na (-nə)
(anatomy, zoology) the cartilaginous process forming the lowermost part of the breastbone (sternum) also called xiphoid, xiphoid process
xiph’i·ster’nal adj.
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- Xiphosuran
belonging or pertaining to the order xiphosura, comprising the horseshoe crabs. an arthropod of the order xiphosura; a horseshoe crab. noun any chelicerate arthropod of the subcl-ss xiphosura, including the horseshoe crabs and many extinct forms adjective of, relating to, or belonging to the subcl-ss xiphosura
- Xis
the 14th letter of the greek alphabet (ξ, ξ). the group of consonant sounds represented by this letter. historical examples familiar spanish travels w. d. howells noun (pl) xis the 14th letter in the greek alphabet (ξ, ξ), a composite consonant, transliterated as x noun a river in s china, rising in yunnan province and […]