| CW | cardiac work; case work; cell wall; chemical warfare; chemical weapon; chest wall; children's ward; ... |
|---|---|
| CWD | cell wall defect; continuous-wave Doppler |
| DMWP | distal mean wave pressure |
| DWT | dichotic word test; discrete wave transform |
| ESWL | extracorporeal shock wave lithotripsy |
| delta rhythm | Brain waves in the electroencephalogram which have a frequency below 3 1/2 per second. They are typical in deep sleep, in infancy, and in serious brain disorders. (12 Dec 1998) |
|---|---|
| delta sleep-inducing peptide | <chemical> A nonapeptide that is found in neurons, peripheral organs, and plasma. This neuropeptide induces mainly delta sleep in mammals. In addition to sleep, the peptide has been observed to affect electrophysiological activity, neurotransmitter levels in the brain, circadian and locomotor patterns, hormonal levels, psychological performance, and the activity of neuropharmacological drugs including their withdrawal. Chemical name: Delta sleep-inducing peptide (12 Dec 1998) |
| delta virus | <virology> Hepatitis D virus. A defective RNA virus requiring a helper virus, usually Hepatitis B virus, for replication. Delta virus infections may exacerbate the clinical effects of Hepatitis B. (18 Nov 1997) |
| S wave | A negative (downward) deflection of the QRS complex following an R w; successive downward deflections within the same QRS complex are labelled S', S'', etc. (05 Mar 2000) |
| dicrotic wave | The second rise in the tracing of a dicrotic pulse. Synonym: recoil wave. (05 Mar 2000) |
| DNA delta-helicase | <enzyme> From foetal calf thymus; partially copurifies with DNA polymerase delta; also has DNA-dependent atpase activity Registry number: EC 3.6.1.- (26 Jun 1999) |
| dodecenoyl-coenzyme A delta-isomerase | <enzyme> An auxiliary enzyme for the beta-oxidation of unsaturated fatty acids; converts both cis and trans delta(3)-enoyl CoA esters to their trans-2-counterparts Registry number: EC 5.3.3.8 Synonym: enoyl-CoA isomerase, dodecenoyl-CoA delta-isomerase, 3-cis-2-trans-enoyl-CoA isomerase, delta(3), delta(2)-enoyl-CoA isomerase (26 Jun 1999) |
| drift wave | <radiobiology> Oscillations in a magnetically-confined plasma arising in the presence of density gradients (such as at the plasma's surface). These resemble the waves that propagate at the interface of two fluids with different density in a gravitational field. (09 Oct 1997) |
| D wave | A positive or negative deflection in the electroretinogram occurring when a light stimulus is removed (off-response). (05 Mar 2000) |
| immunoglobulins, delta-chain | Heavy chains found in the fab and fc fragments of IgD and having a molecular weight of approximately 64 kD. They contain about 500 amino acid residues arranged in four domains and an oligosaccharide component covalently bound to the fc fragment. (12 Dec 1998) |
| quarter-wave plate | <microscopy> A compensator giving a retardation of about 130 nm, and a phase shift of 1/4 ~, thus constituting a device used with a polarizer and analyser designed to produce circularly polarized light. (05 Aug 1998) |
| Q wave | The initial deflection of the QRS complex when such deflection is negative (downward). (05 Mar 2000) |
| isopiperitenone delta-isomerase | <enzyme> From peppermint; intramolecular 1,3-hydrogen transfer forms piperitenone Registry number: EC 5.3.3.11 Synonym: isopiperitenone isomerase (26 Jun 1999) |
| overflow wave | The descending wave of the sphygmogram from the apex to the first anacrotic break. (05 Mar 2000) |
| theta wave | Brain waves in the electroencephalogram which have a frequency of 4 to 7 per second. They occur mainly in children but also in adults during periods of emotional stress. (12 Dec 1998) |