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1. [TA] SYN: horn. 2. Any structure composed of horny substance. 3. One of the coronal extensions of the dental pulp underlying a cusp or lobe. 4. The major subdivisions of the lateral ventricle in the cerebral hemisphere (the frontal horn, occipital horn, and temporal horn). SEE ALSO: lateral ventricle. 5. The major divisions of the gray columns of the spinal cord (anterior horn, lateral horn, posterior horn). [L. horn]

- c. ammonis SYN: Ammon horn.

- c. anterius [TA] SYN: anterior horn.

- coccygeal c. two processes that project upward from the dorsum of the base of the coccyx to articulate with the sacral cornua. SYN: c. coccygeum [TA], coccygeal horn, cornua coccygealia.

- cornua coccygealia SYN: coccygeal c..

- c. coccygeum [TA] SYN: coccygeal c..

- c. cutaneum SYN: cutaneous horn.

- cornua of falciform margin of saphenous opening See inferior horn of falciform margin of saphenous opening, superior horn of falciform margin of saphenous opening.

- c. frontale ventriculi lateralis [TA] SYN: cornua of lateral ventricle.

- cornua of hyoid bone See greater horn of hyoid bone, lesser horn of hyoid.

- c. inferius [TA] SYN: inferior horn.

- c. inferius cartilaginis thyroideae [TA] SYN: inferior horn of thyroid cartilage.

- c. inferius marginis falciformis hiatus sapheni [TA] SYN: inferior horn of falciform margin of saphenous opening.

- c. inferius ventriculi lateralis [TA] SYN: inferior horn of lateral ventricle.

- c. laterale [TA] SYN: lateral horn.

- cornua of lateral ventricle SYN: c. frontale ventriculi lateralis [TA], c. occipitale ventriculi lateralis [TA], c. temporale ventriculi lateralis [TA].anterior horn (1), inferior horn, posterior horn.

- c. majus ossis hyoidei [TA] SYN: greater horn of hyoid bone.

- c. minus ossis hyoidei [TA] SYN: lesser horn of hyoid.

- c. occipitale ventriculi lateralis [TA] SYN: cornua of lateral ventricle.

- c. posterius [TA] SYN: posterior horn.

- c. posterius ventriculi lateralis [TA] SYN: posterior horn.

- sacral c. [TA] the most caudal parts of the intermediate sacral crest. On each side they form the lateral margin of the sacral hiatus and articulate with the coccygeal cornua. SYN: c. sacrale [TA], sacral horn.

- c. sacrale [TA] SYN: sacral c..

- c. of spinal cord SYN: posterior horn. See anterior horn (2), lateral horn.

- styloid c. SYN: lesser horn of hyoid.

- c. superius cartilaginis thyroideae [TA] SYN: superior horn of thyroid cartilage.

- c. superius marginalis falciformis [TA] SYN: superior horn of falciform margin of saphenous opening.

- c. temporale ventriculi lateralis [TA] SYN: inferior horn of lateral ventricle.

- c. temporale ventriculi lateralis [TA] SYN: cornua of lateral ventricle.

- cornua of thyroid cartilage inferior horn of thyroid cartilage, superior horn of thyroid cartilage.

- c. uteri [TA] SYN: uterine horn.

cor·nu 'kȯr-(.)n(y)ü n, pl cor·nua -n(y)ə-wə a horn-shaped anatomical structure (as either of the lateral divisions of a bicornuate uterus, one of the lateral processes of the hyoid bone, or one of the gray columns of the spinal cord)

cor·nu·al -n(y)ə-wəl adj

n. (pl. cornua)

(in anatomy) a horn-shaped structure, such as the horn-shaped processes of the hyoid bone and thyroid cartilage. See also horn.