Noun
someone who is expert in the theory of a particular science or art
a theorist
Source: en.wiktionary.orgAt the same time, however, Adorno protested against disruptions of his own lectures and refused to express his solidarity with their political goals, maintaining instead his autonomy as a theoretician. Source: Internet
During this period Mao clearly established himself as a Marxist theoretician and produced the bulk of the works which would later be canonized into the "thought of Mao Zedong". Source: Internet
"I am unable to understand Jeans' stubbornness – he is an example of a theoretician as should never be existing, the same as Hegel was for philosophy. Source: Internet
GM Robert Byrne called him "perhaps the most brilliant theoretician and teacher in the history of the game." Source: Internet
Sapir was now more preoccupied with testing hypotheses about historical relationships between the Na-Dene languages than with documenting endangered languages, in effect becoming a theoretician. Source: Internet
The first theoretician was Dr Mahmoud Afshar Yazdi. Source: Internet