- something added; an addition.
Origin of additament
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for additament
In case an Additament be employed, what that is, and in what proportion it is added?
An Aqua regis may also be drawn from nitrous earths by the force of fire only, without the help of any additament.
Corrosive Sublimate may also be made only by mixing Mercury with Sea-salt, without any additament.
Milk left to itself, without the help of distillation, or any additament whatever, undergoes a sort of decomposition.
By means of this additament he decompounded Sal Ammoniac, and by the experiment obtained the lights he wanted.