‖ n. A sofa, open carriage, or the like, so constructed that the occupants sit back to back. [ Webster 1913 Suppl. ]

‖adv. [ F. ] Back to back; as, to sit dos-à-dos in a dogcart; to dance dos-à-dos, or so that two dancers move forward and pass back to back. [ Webster 1913 Suppl. ]

n. [ Cf. F. dosage. See Dose, v. ] 1. (Med.) The administration of medicine in doses; specif., a scheme or system of grading doses of medicine according to age, etc. [ Webster 1913 Suppl. ]

2. The process of adding some ingredient, as to wine, to give flavor, character, or strength. [ Webster 1913 Suppl. ]

3. same as dose{ 1 }; as, 200 mg q.i.d. [ wns=1 ] [ PJC ]

4. the quantity of a medicine or other substance given to an animal, expressed as a quantity per body weight; as, use a dosage of 10 milligrams per kilogram [ PJC ]

5. the quantity of radiation given to or absorbed by an object; as, a maximum dosage of 1 mrad per day is allowed. [ wns=1 ]
Syn. -- dose. [ WordNet 1.5 +PJC ]

n. [ F. dose, Gr. do`sis a giving, a dose, fr. dido`nai to give; akin to L. dare to give. See Date point of time. ] 1. The quantity of medicine given, or prescribed to be taken, at one time. [ 1913 Webster ]

2. A sufficient quantity; a portion; as much as one can take, or as falls to one to receive. [ 1913 Webster ]

3. Anything unpleasant that one is obliged to take; a disagreeable portion thrust upon one; also used figuratively, as to give someone a dose of his own medicine, i. e. to retaliate in kind. [ 1913 Webster ]

I am for curing the world by gentle alteratives, not by violent doses. W. Irving. [ 1913 Webster ]

I dare undertake that as fulsome a dose as you give him, he shall readily take it down. South. [ 1913 Webster ]

4. a quantity of radiation which an object absorbs, or to which it is exposed. [ PJC ]

v. t. [ imp. & p. p. Dosed p. pr. & vb. n. dosing. ] [ Cf. F. doser. See Dose, n. ] 1. To proportion properly (a medicine), with reference to the patient or the disease; to form into suitable doses. [ 1913 Webster ]

2. To give doses to; to medicine or physic to; to give potions to, constantly and without need. [ 1913 Webster ]

A self-opinioned physician, worse than his distemper, who shall dose, and bleed, and kill him, “secundum artem.” South [ 1913 Webster ]

3. To give anything nauseous to. [ 1913 Webster ]

n. [ OF. dossel; cf. LL. dorsale. See Dorsal, and cf. Dorse, Dorsel. ] Same as Dorsal, n. [ R. ] [ 1913 Webster ]

n. 1. for measuring doses of .
Syn. -- dosemeter. [ WordNet 1.5 ]

n. [ NL. dosis dose + -meter. ] a device for measuring doses of radiation, especially ionizing radiation such as X-rays, gamma rays, or ionizing particles. [ PJC ]

n. a dosimeter cosisting of a radiation-sensitive material, such as film, worn in a small package on a person's clothing, to record the accumulated radiation exposure of the person over a period of time; -- used to monitor the exposure of individuals, such as workers in a nuclear power plant, to ionizing radiation. [ PJC ]

n. [ NL. dosis dose + -metry. ] (Med.) Measurement of doses; specif., a system of therapeutics which uses but few remedies, mostly alkaloids, and gives them in doses fixed by certain rules. -- Do`si*met"ric a. -- Do*sim"e*trist n. [ Webster 1913 Suppl. ]