(astrophysics) Abbreviation of relativistic magnetohydrodynamic. / (astrophysics) Abbreviation of radiative magnetohydrodynamic. / (physics) Abbreviation of resistive magnetohydrodynamic.

Alternative spelling of blue screen

(Australia, attributive) A tax avoidance scheme from the 1970s.

An artifact or document rendering something allowed or legal. / A learner's permit. / (obsolete) Formal permission.