(anthropology, genealogy) A relative by marriage.

To refine.

(mathematics) Assigning finite values to finite quantities.

(geometry) Of or pertaining to a function expressible as f ( x → ) = A x → + b → {\displaystyle f({\vec {x}})=A{\vec {x}}+{\vec {b}}} (where A {\displaystyle A} is a linear transformation and b → {\displaystyle {\vec {b}}} is a constant), which, regarded as a transformation, maps parallel lines to parallel lines and finite points to finite points.

(comparable, chemistry) Of two materials, having mutual affinity.