symbol for (1) the short arm of a chromosome; or (2) the frequency of the more common allele of a pair; (3) pico-.
an electrocardiographic abnormality in which the P wave is prolonged, in dogs more than 0.04 s. Associated with left atrial enlargement.
an electrocardiographic abnormality in which the P wave is tall and peaked. Indicative of right atrial enlargement which is often associated with chronic pulmonary disease.
see peptidyl-tRNA binding site (under trna).
[L.] post cibum (after meals).
[L.] pro re nata (according to circumstances).
pounds per square inch, equivalent to one-seventh of a kilopascal (kPa), the metric measure of pressure.
pulmonic second sound. See heart sounds.