(medicine, of a prescription medication) Outside of regulatorily approved indications, but (unless otherwise specified) within the bounds of reasonable use as defined by a licensed prescriber.

(medicine, of a prescription medication) Outside of regulatorily approved indications, but (unless otherwise specified) within the bounds of reasonable use as defined by a licensed prescriber.

write off

(euphemistic, Scotland) To practise coitus interruptus, the withdrawal method of contraception. / Used other than figuratively or idiomatically: see get, off, at, Haymarket.

(military) That portion of a theater of war] which an army passes over in attaining its object.

(geology) A line in the plane of a stratum, or part of a stratum, perpendicular to its intersection with a horizontal plane; the line of greatest inclination of a stratum to the horizon

(military) Arrangement of troops for marching. / (military) Course or direction taken by an army or body of troops in marching.

(military, weaponry) direction in which a weapon fires / (figuratively, by extension) position vulnerable to attack

(fine arts) An abstract line supposed to be beautiful in itself and absolutely; differently represented by different authors, often as a kind of elongated S (like the one drawn by Hogarth).

(military) The position of troops drawn up in their usual order without any determined maneuver. / (naval) The line or arrangement formed by vessels of war in an engagement.