delta

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.

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Descriptive Language for Taxonomy [program]; dietary effects on lipoproteins and thrombogenic activity

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del·ta 'del-tə n

1) the fourth letter of the Greek alphabet symbol Delta or delta

2) 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 it

3) DELTA WAVE

delta or delta- adj

1) 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>

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del·ta (delґtə) [Δ, δ] 1. the fourth letter of the Greek alphabet. See also Δ- and δ-. 2. a triangular space.