Is it farther or further?
c.1600, from Middle French dose (15c.), from Late Latin dosis, from Greek dosis "a portion prescribed," literally "a giving," used by Galen and other Greek physicians to mean an amount of medicine, from stem of didonai "to give" (see date (n.1)). Slang meaning "venereal disease" is from 1914.
1650s, from dose (n.). Related: Dosed; dosing.
A specified quantity of a therapeutic agent, such as a drug, prescribed to be taken at one time or at stated intervals.
The amount of radiation administered as therapy to a given site.
To give or prescribe something, such as medicine, in specified amounts.
To give someone a dose, as of medicine.
To infect with a venereal disease, esp gonorrhea: What's going to happen is that you'll get dosed (1914+)