Definition of "residuum"

The residue, remainder or rest of something.  examples

(chemistry) The solid material remaining after the liquid in which it was dissolved has been evaporated; a residue.  examples

(fuzzy logic) A binary function from [0,1] × [0,1] to [0,1] which is defined in terms of the t-norm as follows: x → y = sup { z | z ∗ x ⩽ y } , where ∗ denotes the t-norm function and sup denotes the supremum.  examples

(law) The residue of an estate.  examples