Definition of metasomatize in US English:

metasomatize

(British metasomatise)

verb

[with object]Geology
  • Change the composition of (a rock) by the introduction or removal of chemical constituents.

    ‘hot fluids from the magma chamber metasomatized the volcanic lavas’

Pronunciation

metasomatize

/ˌmɛdəˈsoʊməˌtaɪz//ˌmedəˈsōməˌtīz/