a. and sb. Zool. [f. prec. + -OID.] a. adj. Resembling or allied to the genus Xiphias; belonging to or having the characters of the family Xiphiidæ. b. sb. A xiphioid fish.

1

1851.  Mantell, Petrifactions, v. § 1. 416. Cycloid Order…. Xiphioids.

2

1891.  Cent. Dict., Xiphioid, a. and n.

3