ଅର୍ଥ : Not spreading pollution or contamination. Especially radioactive contamination.
ଉଦାହରଣ :
A clean fuel.
Cleaner and more efficient engines.
The tactical bomb is reasonably clean.
ସମକକ୍ଷ : clean
Spreading pollution or contamination. Especially radioactive contamination.
The air near the foundry was always dirty.