Arthur Holmes was a renowned geologist and a pioneer in the field of geochronology. He is also closely associated with the theory of plate tectonics. Synonyms for Arthur Holmes include "father of geochronology," "pioneer of plate tectonics," and "groundbreaking geologist." Holmes was instrumental in developing the concept of radiometric dating, which revolutionized the field of geology. He also helped scientists to understand the movement of lithospheric plates and the formation of various landforms. Some other synonyms for Arthur Holmes might include "innovative scholar," "insightful researcher," and "trailblazing scientist." Overall, Arthur Holmes is widely regarded as a key figure in the history of modern geology.