from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Bent at the end like a hook; unciform.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Hooked at the end.
  • adj. hooked in appearance.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Hooked; bent at the tip in the form of a hook.

from The Century Dictionary and Cyclopedia

  • Hooked or crooked; hooked at the end; forming a hook; unciform. Also uncate.
  • The anterior extremity of the hippocampal gyrus. See cuts under cerebral, gyrus, and sulcus.
  • n. An uncinate sponge-spicule.
  • n. An uncinate process (processus uncinatus), such as is found on the ribs of birds and crocodiles.


Latin uncīnātus, from uncīnus, barb, from uncus, hook.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin uncīnātus, from uncīnus ("hook, barb"). (Wiktionary)


  • The angle of junction of the lower and left lateral borders forms a prolongation, termed the uncinate process.

    XI. Splanchnology. 2j. The Pancreas

  • Her study focused on a bundle of fibers known as the uncinate fasciculus, which connects an emotion-processing area known as the amygdala, at the bottom of the brain, with a regulatory area known as the orbital prefrontal cortex, at the front of the brain. - News

  • Lower arrows point to complete removal of the left and right uncinate processes of the third cervical vertebrae suggestive of complete severance of the spinal column leading to full decapitation (HK43 Burial 350).

    Zombie Attack at Hierakonpolis

  • Microraptor/Cryptovolans has an uncinate process on its ribs which is present in all modern birds, but missing in Archaeopteryx as far as I know.

    New Archaeopteryx fossil provides further insight into bird, dinosaur evolution - The Panda's Thumb

  • They are serially homologous with, for example, the uncinate processes of the ribs in birds (see Figs. 5 and 6).

    Form and Function A Contribution to the History of Animal Morphology

  • Behind this process a broad, thin plate, the ethmoidal process, ascends to join the uncinate process of the ethmoid; from its lower border a thin lamina, the maxillary process, curves downward and lateralward; it articulates with the maxilla and forms a part of the medial wall of the maxillary sinus.

    II. Osteology. 5b. 6. The Inferior Nasal Concha

  • In the articulated skull this aperture is much reduced in size by the following bones: the uncinate process of the ethmoid above, the ethmoidal process of the inferior nasal concha below, the vertical part of the palatine behind, and a small part of the lacrimal above and in front (Figs. 158, 159); the sinus communicates with the middle meatus of the nose, generally by two small apertures left between the above-mentioned bones.

    II. Osteology. 5b. 2. The Maxillæ (Upper Jaw)

  • A curved lamina, the uncinate process, projects downward and backward from this part of the labyrinth; it forms a small part of the medial wall of the maxillary sinus, and articulates with the ethmoidal process of the inferior nasal concha.

    II. Osteology. 5a. 6. Ethmoid bone

  • The hiatus semilunaris is bounded inferiorly by the sharp concave margin of the uncinate process of the ethmoid bone, and leads into a curved channel, the infundibulum, bounded above by the bulla ethmoidalis and below by the lateral surface of the uncinate process of the ethmoid.

    X. The Organs of the Senses and the Common Integument. 1b. The Organ of Smell

  • Below the bulla ethmoidalis, and partly hidden by the inferior end of the uncinate process, is the ostium maxillare, or opening from the maxillary sinus; in a frontal section this opening is seen to be placed near the roof of the sinus.

    X. The Organs of the Senses and the Common Integument. 1b. The Organ of Smell


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