hydraform

comparative more hydraform · superlative most hydraform

1. alternativeAlternative form of hydriform.

   These polyparies, formed by the association of hydraform polypes, are among the most graceful and elegant of all the structures with which this class presents us.

   1849, “Order I.—Hydroida.”, in D[avid] M[eredith] Reese, editor, Elements of Zoology, or Natural History of Animals (Chambers’ Educational Course; VI), New York, N.Y.: A[lfred] S[mith] Barnes & Co.; […], →OCLC, Sub-Kingdom—Radiata, Class XXII (Polypifera), paragraph 899, page 507

   2 more examples

   If in the hydraform and tubularian zoophytes the tentacles are prolongations of the stomach, properly so called, zoophytes, as a class, might be ranged under two leading divisions; that 1st in which the tentacles are gastric, and 2nd that in which they are perigastric prolongations.

   1853 October, Thomas Williams, “On the Mechanism of Aquatic Respiration and on the Structure of the Organs of Breathing in Invertebrate Animals”, in P[rideaux] J[ohn] Selby, Charles C[ardale] Babington, J[ohn] H[utton] Balfour, Richard Taylor, editors, The Annals and Magazine of Natural History, […], second series, volume XII, number 70, London: […] Taylor and Francis, →ISSN, →OCLC, foonote ‡, page 245

   But as very few Medusæ have been traced from their original hydraform state, the difficulty of classifying these Hydræ still exists, and the group of specifically distinct animals is still designated by the one name, Hydra tuba.

   1861, A. Ramsay, “Hydra Tuba. A Study for the Aquarium.”, in Recreative Science: A Record and Remembrancer of Intellectual Observation, volume II, London: Groombridge and Sons, […], →OCLC, page 55, column 1