1. Rendered active; e.g. rendered radioactive or luminescent or photosensitive or conductive.
2. Enabled or turned on.
> 3. (Of sewage) Treated with aeration and bacteria to aid decomposition.
4. (Physics) Of e.g. a molecule; made reactive or more reactive; SYN. excited.
5. (Military) Set up and placed on active assignment

Množina: activated carbons

Powdered or granular carbon used for purifying by adsorption; given orally (as a slurry) it is an antidote for some kinds of poisons; SYN. activated charcoal.
Adsorptive particles or granules of carbon usually obtained by heating carbon (such as wood). These particles or granules have a high capacity to selectively remove certain trace and soluble materials from water.
A highly adsorbent powdered or granular carbon made usually by carbonization and chemical activation and used chiefly for purifying by adsorption — called also activated charcoal.

Množina: activated carbon filters

Množina: activated charcoals

Powdered or granular carbon used for purifying by adsorption; given orally (as a slurry) it is an antidote for some kinds of poisons

Množina: activated charcoal filters