- 1. Fourth letter of the Greek alphabet, Δ (capital), δ (lower case). 2. In anatomy, a triangular surface.- d. check a comparison of consecutive values for a given test in a patient's laboratory file used to detect abrupt changes, usually generated as a part of computer-based quality control programs. SYN: Δ check.- d. fornicis SYN: commissura fornicis.- Galton d. 1. a more or less well-marked triangle, in a fingerprint, on either side where the straight ridges near the joint of the distal phalanx are succeeded by arches, loops, or whorls; SEE ALSO: Galton system of classification of fingerprints, under fingerprint. 2. SYN: triradius.- d. mesoscapulae the flat triangular surface at the vertebral extremity of the spine of the scapula over which glides the tendon for the lower fibers of the trapezius muscle.* * *Descriptive Language for Taxonomy [program]; dietary effects on lipoproteins and thrombogenic activity
* * *del·ta 'del-tə n1) the fourth letter of the Greek alphabet symbol Delta or delta2) any of various things felt to resemble a capital Delta esp the triangular terminus of a pattern in a fingerprint formed either by bifurcation of a ridge or by divergence of two ridges that are parallel beyond it3) DELTA WAVEdelta or delta- adj1) of or relating to one of four or more closely related chemical substances <the \delta chain of fetal hemoglobin> <delta-yohimbine> used somewhat arbitrarily to specify ordinal relationship or a particular physical form and esp. one that is allotropic, isomeric, or stereoisomeric (as in delta-benzene hexachloride)2) fourth in position in the structure of an organic molecule from a particular group or atom also having a structure characterized by such a position <delta-hydroxy acids> <delta-lactones>
* * *del·ta (delґtə) [Δ, δ] 1. the fourth letter of the Greek alphabet. See also Δ- and δ-. 2. a triangular space.
Medical dictionary. 2011.