释义 |
tau I. \ˈtau̇, ˈtȯ\ noun (-s) Etymology: Greek, of Semitic origin; akin to Hebrew tāw sign, cross, taw (letter) 1. a. : the 19th letter of the Greek alphabet — symbol T or τ; see alphabet table b. : taw IV 2. : a T-shaped mark or object (as a St. Anthony's cross, a pastoral staff, or an ankh) II. noun 1. also tau particle : a short-lived elementary particle of the lepton family that exists in positive and negative charge states and has a mass about 3500 times heavier than an electron 2. : a protein that binds to and regulates the assembly and stability of neuronal microtubules and that is found in an abnormal form as the major component of neurofibrillary tangles |