adj.
Pronunciation: ˌ re-l ə -ti- ' vis-tik
Function: adjective
Date: 1886
1 : of, relating to, or characterized by relativity or relativism
2 : moving at a velocity such that there is a significant change in properties (as mass) in accordance with the theory of relativity <a relativistic electron>
– rel · a · tiv · is · ti · cal · ly \ - ' vis-ti-k( ə -)l ē \ adverb