|reference frame (rěf'ər-əns) Pronunciation Key
A basis of a four-dimensional coordinate system in which the first coordinate is understood as a time coordinate, while the other three coordinates represent spatial dimensions. Inertial frames and non-inertial frames are both examples of reference frames. Also called frame of reference. See also General Relativity, space-time, Special Relativity.
|a gadget; dingus; thingumbob.|
|a stew of meat, vegetables, potatoes, etc.|