\Dil"u*ent\, a. [L. diluens, p. pr. diluere. See
{Dilute}.]
Diluting; making thinner or weaker by admixture, esp. of
water. --Arbuthnot.

\Dil"u*ent\, n.
1. That which dilutes.
2. (Med.) An agent used for effecting dilution of the blood;
   a weak drink.
         There is no real diluent but water.   --Arbuthnot.