a. and sb. [f. L. turbo, turbin-em (see TURBO) + -AL.] A. adj. Turbinated, top-shaped; in Anat. = TURBINATE a.: cf. B.
1584. R. Scot, Discov. Witchcr., XIII. xix. (1886), 258. Experiments … in diverse sorts of glasses;… the columnarie, the pyramidate or piked, the turbinall.
1883. Science, I. 233/1. The arrangement of the turbinal bones in the fissiped carnivores.
1903. Brit. Med. Jrnl., 18 April, 910. No swelling as yet of turbinal bodies or septal mucous membrane.
B. sb. Anat. A turbinal or turbinate bone; the ethmo-, the maxillo-, or the spheno-turbinal.
1848. Owen, Archetype & Homol. Vertebr. Skel., i. 13. ‘Turbinal’ … is a substitute for the phrase ‘os turbinatum inferius’ and its synonym ‘os spongiosum inferius.’ Ibid., ii. 114. The Turbinal or nose-capsule. Ibid. (1854), Skel. & Teeth, in Orr’s Circ. Sc. I. Org. Nat., 179. An ossified part of the capsule of the organ of smell, ‘turbinal.’ Ibid., 251. The superior turbinals extend … below into the presphenoidal sinus.
1871. Huxley, Anat. Vertebr. Anim., v. 237. Forming the floor of the front part of the nasal chamber, on each side, is a large concavo-convex bone, which … protects the nasal gland, and is commonly termed a turbinal, though, if it be a membrane bone, it does not truly correspond with the turbinals of the higher Vertebrata.
