| A-PD | anteroposterior diameter |
|---|---|
| bisp | bispinous [diameter] |
| BPD | biparietal diameter; blood pressure decrease; borderline personality disorder; bronchopulmonary dysp... |
| CM | California mastitis [test]; calmodulin; capreomycin; carboxymethyl; cardiac murmur; cardiac muscle; ... |
| CMD | campomelic dysplasia; camptomelic dwarfism; cartilage matrix deficiency; chief medical director; chi... |
| longitudinal wave | <physics> Waves where the variation of the field is partially or totally in the direction of propagation (parallel to wavennumber, k [a vector]). Examples include sound waves and Langmuir waves. Contrasted with transverse waves, where the variation is perpendicular to the direction of propagation, such as light waves. (13 Nov 1997) |
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