Z

z

noun

{bc}the 26th and last letter of the English alphabet

z

abbreviation

zero

Z

noun

{bc}{sx|z particle||}

Z

abbreviation

zenith distance

z-ax*is

noun

{bc}one of the axes in a three-dimensional rectangular coordinate system

z-co*or*di*nate

noun

{bc}a coordinate whose value is determined by measuring parallel to a z-axis

z distribution

noun

{bc}a probability density function and especially a normal distribution that has a mean equal to zero and a standard deviation equal to one and that is used especially in testing hypotheses about means or proportions of samples drawn from populations whose population standard deviations are known {dx}compare {dxt|z-test||}{/dx}

Z line

noun

{bc}any of the dark thin bands across a striated muscle fiber that mark the junction of actin filaments in adjacent sarcomeres

Z particle

noun

{bc}a neutral elementary particle about 90 times heavier than a proton that along with the W particle is a transmitter of the weak force

z-score

noun

{bc}{sx|standard score||}