‖Xi‐phu″ra (?), n. pl. [NL., from Gr. ξίφοσ sword + ουρἄ tail.] (Zoöl.) Same as Limuloidea. Called also Xiphosura.
X ray. See under Ray.
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.