(chiefly attributive) Pertaining to an orthomorphic map projection, in which meridians appear at right-angles to the equator, and lines of latitude are horizontal lines whose distance from each other increases with distance from the equator.

plural of merchant prince

(historical or figuratively) A mercantile plutocrat: a man who wields great de facto political power by virtue of economic assets derived from trade and commerce.

plural of mercaptoalkyl

thioglycolic acid

plural of mercy killer

a type of mercy killer, a caregiver who is a serial killer, and who practices mercy killing on both the willing and unwilling, knowing and unknowing, dependent only on the killer's sense of a patient's level of suffering from their illness.

plural of angel of mercy

a person who commits mercy killing

(mineralogy) An orthorhombic-dipyramidal mineral containing hydrogen, oxygen, potassium, and sulfur.