(obsolete) A mask.

Alternative form of facestalking

A measure of the effect of a solute upon colligative properties such as osmotic pressure, relative lowering in vapour pressure, elevation of boiling point, and depression of freezing point. It is the ratio between the actual concentration of particles produced when the substance is dissolved, and the concentration of a substance as calculated from its mass.

(slang, vulgar, derogatory) An angry or unpleasant look that does not accurately reflect the way a person is feeling or that the person assumes when not consciously controlling their expression.

plural of factory reset

plural of factorial prime

(philosophy of science) The view that scientific facts about the world are not absolute, but are relative to historical eras and to evolving scientific theories.

(Internet slang) A disturbing facial expression with a wide smile and big bright eyes.

(slang, music) Particularly in heavy metal music, a musical passage or sung note that is particularly intense.

plural of slap in the face