nonexposed
adjective
non·ex·posed ˌnän-ik-ˈspōzd 
: not exposed to something
nonexposed skin
Of 1,000 male nonsmokers exposed to excess radon, 16 will die of lung cancer, he estimates. That's 5 more than in a nonexposed group. 
U.S. News & World Report
U.S. News & World Report
Word History
First Known Use
1837, in the meaning defined above
- light comedy
- light cruiser
- light curve
- light dawns
- light displacement
- light due
- light duty
- light engine
- light equation
- light field artillery
- light filter
- light green sf
- Light Green SF Yellowish
- light grège
- light guide
- light gunmetal
- light harness
- light heart
- light heavyweight
- light heavyweights
- light housekeeping
- light industry
- light into
- light lock
- light machine gun