- anal c. SYN: intergluteal c..
- branchial clefts a bilateral series of slitlike openings into the pharynx through which water is drawn by aquatic animals; in the walls of the clefts are the vascular gill filaments that take up oxygen from the water passing through the clefts; sometimes loosely applied to the branchial ectodermal grooves of mammalian embryos, which are imperforate, rudimentary homologues of complete gill clefts. SYN: gill clefts.
- cholesterol c. a space caused by the dissolving out of cholesterol crystals in sections of tissue embedded in paraffin.
- complete posterior laryngeal c. See laryngotracheoesophageal c..
- facial c. a c. resulting from incomplete merging or fusion of embryonic processes normally uniting in the formation of the face, e.g., c. lip or c. palate. SYN: prosopoanoschisis.
- first visceral c. SYN: hyomandibular c..
- gill clefts SYN: branchial clefts.
- gingival c. a fissure associated with pocket formation and lined by mixed gingival and pocket epithelium.
- gluteal c. SYN: intergluteal c..
- hyobranchial c. the c. caudal to the hyoid arch of the embryo.
- hyomandibular c. the c. between the hyoid and mandibular arches of the embryo; the external auditory meatus is developed from its dorsal portion. SYN: first visceral c..
- intergluteal c. [TA] the sulcus between the buttocks (nates). SYN: crena analis [TA], crena ani, crena interglutealis, natal c., anal c., crena clunium, gluteal c..
- interneuromeric clefts clefts between the neuromeric or segmental elevations in the primitive rhombencephalon.
- Larrey c. SYN: trigonum sternocostale.
- laryngotracheoesophageal c. absence of fusion of the musculature or cricoid cartilaginous laminae of varying severity: type 1, submucous c. of the interarytenoid muscles (known also as occult posterior laryngeal c. or submucous laryngeal c.); type 2, partial cricoid c. (known also as partial posterior laryngeal c.); type 3, total cricoid c. (known also as laryngotracheoesophageal c. or total cricoid c.); and type 4, extension of the c. into the esophagus.
- Maurer clefts SYN: Maurer dots, under dot.
- median maxillary anterior alveolar c. an asymptomatic midline defect of the maxillary anterior ridge; the result of a failure of fusion or development of the lateral halves of the palate.
- occult posterior laryngeal c. See laryngotracheoesophageal c..
- partial cricoid c. See laryngotracheoesophageal c..
- partial posterior laryngeal c. See laryngotracheoesophageal c..
- posterior laryngeal c. laryngotracheoesophageal c. (type 2 or 3).
- pudendal c. [TA] the c. between the labia majora. SYN: rima pudendi [TA], fissura pudendi, pudendal cleavage, pudendal slit, rima vulvae, urogenital c., vulvar slit.
- residual c. the remnants of the pituitary diverticulum that occur between the pars distalis and pars intermedia; a distinct lumen is present in some animals, but, in humans, is present only during prenatal development and sometimes in young children. SYN: residual lumen.
- Schmidt-Lanterman clefts SYN: Schmidt-Lanterman incisures, under incisure.
- subdural c. SYN: subdural space.
- submucous laryngeal c. See laryngotracheoesophageal c..
- synaptic c. the space about 20 nm wide between the axolemma and the postsynaptic surface. SEE ALSO: synapse.
- total cricoid c. See laryngotracheoesophageal c..
- urogenital c. SYN: pudendal c..
- visceral c. any c. between two branchial (visceral) arches in the embryo.

* * *

cleft 'kleft n
1) a usu. abnormal fissure or opening esp. when resulting from failure of parts to fuse during embryonic development
2) a usu. V-shaped indented formation: a hollow between ridges or protuberances <the anal \cleft of the human body>
3) the hollow space between the two branches of the frog or the frog and bars or between the bulbs of the heel of a horse's hoof
4) a crack on the bend of the pastern of a horse
5) a division of the cleft foot of an animal

* * *

(kleft) 1. a fissure or elongated opening, especially one occurring in the embryo. 2. a pathologic fissure derived from a failure of parts to fuse during embryonic development.

Medical dictionary. 2011.

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Look at other dictionaries:

  • Cleft — Cleft, n. [OE. clift; cf. Sw. klyft cave, den, Icel. kluft cleft, Dan. kl[ o]ft, G. kluft. See {Cleave} to split and cf. 2d {Clift}, 1st {Clough}.] 1. A space or opening made by splitting; a crack; a crevice; as, the cleft of a rock. Is. ii. 21.… …   The Collaborative International Dictionary of English

  • Cleft — Cleft, a. 1. Divided; split; partly divided or split. [1913 Webster] 2. (Bot.) Incised nearly to the midrib; as, a cleft leaf. [1913 Webster] …   The Collaborative International Dictionary of English

  • cleft — (n.) 1570s, altered (by influence of cleft, new weak pp. of CLEAVE (Cf. cleave) (1)), from M.E. clift (early 14c.), from O.E. geclyft (adj.) split, cloven, from P.Gmc. *kluftis (Cf. O.H.G., Ger. kluft, Dan. klèft cleft ), from PIE *gleubh (see… …   Etymology dictionary

  • cleft — cleft·ed; cleft; un·cleft; …   English syllables

  • cleft — past participle of CLEAVE(Cf. ↑cleave). ► ADJECTIVE ▪ split, divided, or partially divided into two. ► NOUN 1) a fissure or split in rock or the ground. 2) an indentation in a person s forehead or chin, or a hollow between two parts of the body.… …   English terms dictionary

  • Cleft — (kl[e^]ft), imp. & p. p. from {Cleave}. [1913 Webster] …   The Collaborative International Dictionary of English

  • cleft — [adj] separated, split broken, cloven, cracked, crannied, crenelated, parted, perforated, pierced, rent, riven, ruptured, separated, sundered, torn; concept 490 Ant. joined, joint, united cleft [n] break, gap aperture, arroyo, breach, canyon,… …   New thesaurus

  • cleft — index rift (gap), split Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • cleft — cleft, clefţi, s.m. (înv.) muntean grec liber; haiduc. Trimis de blaurb, 14.04.2006. Sursa: DAR …   Dicționar Român

  • cleft — n *crack, fissure, crevasse, crevice, cranny, chink Analogous words: split, rift, *breach: gap, *break, interruption …   New Dictionary of Synonyms

  • cleft — see cleave …   Modern English usage

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