(mathematics) In a manner which uses set theory / (mathematics) In the sense of set theory

(physics, chemistry) A plate or tray in a distillation column that produces the best possible difference between the liquid and vapour phases in equilibrium with it; the equivalent concept in a fractionating column packed with beads or rings

Alternative spelling of set-theoretic

Having to do with group theory.

Having to do with ring theory.

(philosophy) Arising before any theoretical considerations.

plural of theoretical probability

plural of theoretical plate

plural of theoretical physicist

(physics, profession) A scientist who studies theoretical physics; using math and other abstract analysis rather than practical experimentation.