Wikipedia has an article on: <span class="searchmatch">pseudorapidity</span> Wikipedia <span class="searchmatch">pseudorapidity</span> (countable and uncountable, plural <span class="searchmatch">pseudorapidities</span>) (physics) A measure of the velocity...
<span class="searchmatch">pseudorapidities</span> plural of <span class="searchmatch">pseudorapidity</span>...
speed of light = 1). (physics) A measure of the velocity of a particle in a beam relative to the beam's axis midrapidity <span class="searchmatch">pseudorapidity</span> speed, swiftness...