a. Zool. [f. L. cypselus, a. Gr. κύψελος the swift.] Of the family Cypselidæ or genus Cypselus of birds, comprising the Swifts.
1874. Wood, Nat. Hist., 287. The Swifts, technically called the ‘Cypselinæ,’ or Cypseline birds.
So Cypseliform, Cypseloid, Cypselomorphic adjs., having the form or structure of a Swift; belonging to Huxley’s group Cypselimorphæ.
