n. [ Gr. 'a priv. + kro`tos a rattling, beating. ] (Med.) Lack or defect of pulsation. AS [ 1913 Webster ]
n. [ Gr. &unr_;, up, again + &unr_; a stroke. ] (Physiol.) A secondary notch in the pulse curve, obtained in a sphygmographic tracing. [ 1913 Webster ]