Definitions

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

  • adj. Articulated with the tip of the tongue turned back and up toward the roof of the mouth; retroflex.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Pertaining to a point, top, or crown.
  • adj. Pronounced using a retroflexed tongue.
  • n. A sound pronounced using a retroflexed tongue.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Pertaining to the top of the palate; cerebral; -- applied to certain consonants.

from The Century Dictionary and Cyclopedia

  • Pertaining to a top or summit.
  • In anatomy, relating to the cacumen or upper surface of the vermis of the brain.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. pronounced with the tip of the tongue turned back toward the hard palate

Etymologies

From Latin cacūmen, cacūmin-, summit, point.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From cacūmin- (the stem of the Latin cacūmen ("extremity, point, peak") + -al (Wiktionary)

Examples

  • —The folium vermis (folium cacuminis; cacuminal lobe) is a short, narrow, concealed band at the posterior extremity of the vermis, consisting apparently of a single folium, but in reality marked on its upper and under surfaces by secondary fissures.

    IX. Neurology. 4a. The Hind-brain or Rhombencephalon

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