Geology. The process by which a rock becomes plastic, usually as a result of partial melting and the addition by diffusion of extraneous magmatic material.
Origin
1930s (in an earlier sense). From rheo- + -morphism.
Definition of rheomorphism in US English:
rheomorphism
nounˌriːə(ʊ)ˈmɔːfɪz(ə)m
Geology. The process by which a rock becomes plastic, usually as a result of partial melting and the addition by diffusion of extraneous magmatic material.
Origin
1930s (in an earlier sense). From rheo- + -morphism.