adjective Date: 1886 of, relating to, or characterized by relativity or relativism, moving at a velocity such that there is a significant change in properties (as mass) in accordance with the theory of relativity , ~ally adverb
RELATIVISTIC
Meaning of RELATIVISTIC in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012