| papule | <dermatology> A small circumscribed, superficial, solid elevation of the skin. Origin: L. Papula (18 Nov 1997) |
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| piezogenic pedal papule | Pressure-induced papules of the heel, occurring probably as a result of herniation of fat tissue. Pruritic urticarial papules and plaques of pregnancy (PUPPP), intensely pruritic papulovesicles that begin on the abdomen in the third trimester and spread peripherally, resolves rapidly after delivery and does not affect the foetus. Split papules, papule's at commissures of the mouth seen in some cases of secondary syphilis. (05 Mar 2000) |
| mucous papule | A secondary syphilitic eruption of flat-topped papules, occurring in groups covered by a necrotic layer of epithelial detritus, and secreting a seropurulent fluid; they are found at the anus and wherever contiguous folds of skin produce heat and moisture. Synonym: flat condyloma, moist papule, mucous papule. (05 Mar 2000) |
| follicular papule | <dermatology> A papular lesion arising about a hair follicle. It is a feature that is not specific for any condition. (05 Mar 2000) |
| sagittal split mandibular osteotomy | An intraoral surgical procedure for correction of retrognathism, apertognathia, and prognathism; the mandibular rami and posterior body are sectioned in the sagittal plane. (05 Mar 2000) |
| split | 1. To divide lengthwise; to separate from end to end, especially. By force; to divide in the direction of the grain layers; to rive; to cleave; as, to split a piece of timber or a board; to split a gem; to split a sheepskin. "Cold winter split the rocks in twain." (Dryden) 2. To burst; to rupture; to rend; to tear asunder. "A huge vessel of exceeding hard marble split asunder by congealed water." (Boyle) 3. To divide or break up into parts or divisions, as by discord; to separate into parts or parties, as a political party; to disunite. 4. <chemistry> To divide or separate into components; often used with up; as, to split up sugar into alcohol and carbonic acid. To split hairs, to make distinctions of useless nicety. Origin: Probably of Scand. Or Low german origin; cf. Dan. Splitte, LG. Splitten, OD. Splitten, spletten, D. Splijten, G. Spleissen, MHG. Splizen. Cf. Splice, Splint, Splinter. 1. Divided; cleft. 2. <botany> Divided deeply; cleft. Split pease, hulled pease split for making soup, etc. <machinery> Split pin, a pin with one end split so that it may be spread open to secure it in its place. Split pulley, a parting pulley. See Pulley. Split ring, a ring with overlapped or interlocked ends which may be sprung apart so that objects, as keys, may be strung upon the ring or removed from it. Split ticket, a ballot containing the names of only a portion of the candidates regularly nominated by one party, other names being substituted for those omitted. Source: Websters Dictionary (01 Mar 1998) |
| split brain | A brain in which the corpus callosum and usually the anterior and posterior commissures have been sectioned; usually to treat certain refractory epilepsies. (05 Mar 2000) |
| split cast method | A procedure for placing indexed casts on an articulator to facilitate their removal and replacement on the instrument, the procedure of checking the ability of an articulator to receive or be adjusted to a maxillomandibular relation record. Synonym: Needles' split cast method. (05 Mar 2000) |
| split cast mounting | A cast with key grooves on its base, mounted on an articulator for the purpose of easy removal and accurate replacement; split remounting metal plates may be used instead of grooves in casts, a means for testing the accuracy of articulator adjustment. (05 Mar 2000) |
| split fat | Free fatty acids, as reduced by the action of lipases, neutral fats, or phospholipids. (05 Mar 2000) |
| split gene | Non-coding, intervening sequences of DNA that are transcribed, but are removed from within the primary gene transcript and rapidly degraded during maturation of messenger RNA. most genes in the nuclei of eukaryotes contain introns, as do mitochondrial and chloroplast genes. (12 Dec 1998) |
| split genes | Genes where the genomic sequences are interrupted by intervening sequences (introns) that are spliced out of the mRNA prior to translation. (05 Mar 2000) |
| split hand | A congenital deformity in which the division between the fingers, especially between the third and fourth, extends into the metacarpal region. See: lobster-claw deformity. Synonym: main fourchee, split hand. (05 Mar 2000) |
| split pelvis | A pelvis in which the symphysis pubis is absent, the pelvic bones being separated by quite an interval; usually associated with exstrophy of the bladder. (05 Mar 2000) |
| split ratio | The fraction of the cells in a fully grown culture of animal cells that should be used to start a subsequent culture. Minimum may be dictated by medium inadequacies that result in poor growth of some cells at high dilution. (18 Nov 1997) |