de- + compaction
decompaction (countable and uncountable, plural decompactions)
- (chiefly in geology, biochemistry) The act or process of making something less compact; often specifically the reversal of previous compaction
1995, Georgiy P. Zaraisky & Victor N. Balashov, “Thermal Decompaction of Rocks”, in Shmulovich et al., editors, Fluids in the Crust, ISBN 0412563207, page 254:
- As a result of decompaction, the permeability of low-porosity rocks may increase by several orders of magnitude.
the act of making something less compact