bridgmanite/ˈbɹɪd͡ʒmənaɪt/EtymologyFrom Bridgman + -ite. From 2014, named after American physicist Percy Bridgman (1882–1961), winner of the 1946 Nobel Prize for his work on high-pressure physics.nounThe magnesium iron and calcium silicates (Mg,Fe)SiO₃ and CaSiO₃, which have a perovskite structure and are mainly found in the lower part of the mantle.