Webster's Revised Unabridged Dictionary · 1913

Xiphoid

Xiphoid (?; 277) , adjective

[Greek xifoeidh`s sword-shaped; xi`fos a sword + e`i^dos form, shape: compare French xiphoide.]

(a)
(Anatomy) Like a sword; ensiform.
(b)
(Anatomy) Of or pertaining to the xiphoid process; xiphoidian.