millikelvin adjective 1noun 1forms 2 adjective1 •Of or relating to the temperature range at which temperatures are expressed in millikelvinsThe temperatures required for producing a crystalline solid out of such a "one-component plasma" (3) are in the millikelvin range. — 1998 noun1 •One thousandth of a kelvinILT's device cools samples to several millikelvins, cold enough to freeze helium. — 1997 formsmilliKelvins · millikelvins
