cleft lip


* * *

      relatively common (one out of every 1,000 births) congenital deformity in which the central to medial lip fails to fuse properly during the first month of prenatal life, resulting in a fissure in the lip beneath the nostril. Once colloquially known as harelip, cleft lip may be unilateral or bilateral, it may take the form of anything from a small pit to a complete fissure the height of the lip, and it may occur alone or in conjunction with cleft palate (a fissure in the roof of the mouth). The deformity is sometimes familial; animal experiments suggest it may also occur following some abnormality of intrauterine environment. It is a frequent finding in certain chromosomal disorders. Surgery to repair the defect is performed in the first two months of life and is usually successful.

* * *

Universalium. 2010.

Look at other dictionaries:

  • cleft lip — n. 1. a congenital lip deformity often accompanying a cleft palate, in which, usually, the upper lip fails to form completely, leaving a vertical cleft in the center 2. such a lip …   English World dictionary

  • cleft lip — n a split in someone s upper lip, that they are born with …   Dictionary of contemporary English

  • cleft lip — cleft′ lip′ n. pat a congenital defect of the upper lip in which a longitudinal fissure extends into one or both nostrils • Etymology: 1910–15 …   From formal English to slang

  • Cleft lip — The presence of one or two vertical fissures (clefts) in the upper lip cleft lip can be on one side only (unilateral) or on both sides (bilateral) resulting from failure of the normal process of fusion of the lip to come to completion during… …   Medical dictionary

  • cleft lip — noun a congenital cleft in the middle of the upper lip • Syn: ↑harelip, ↑cheiloschisis • Hypernyms: ↑birth defect, ↑congenital anomaly, ↑congenital defect, ↑congenital disorder, ↑congenital abnormalit …   Useful english dictionary

  • cleft lip — harelip the congenital deformity of a cleft in the upper lip, on one or both sides of the midline. It occurs when the three blocks of embryonic tissue that go to form the upper lip fail to fuse and it is often associated with a cleft palate.… …   The new mediacal dictionary

  • cleft lip — noun a congenital split in the upper lip on one or both sides of the centre, often associated with a cleft palate …   English new terms dictionary

  • cleft lip — /klɛft ˈlɪp/ (say kleft lip) noun 1. a congenitally deformed lip, usually the upper one, in which there is a vertical fissure; harelip. 2. the deformity itself …   Australian English dictionary

  • cleft lip — noun Date: circa 1882 a birth defect characterized by one or more clefts in the upper lip resulting from failure of the embryonic parts of the lip to unite called also harelip …   New Collegiate Dictionary

  • cleft lip — noun harelip See Also: cleft palate …   Wiktionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.