untreated

Meanings

1. 1
   adj

   not subjected to chemical or physical treatment

   an untreated fabric

2. 2
   adj

   not given medical care or treatment

   an untreated disease

3. 3
   adj

   Not treated.

   The volume of the flame given out by the untreated wood was estimated at three times that given out by the best treated wood.

4. 4
   adj

   (of a specimen for study under a microscope) not treated with a reagent or dye

Etymology

From un- + treated.