1. Relating to or used in chemistry
   "chemical engineer";
   - chemic [archaic]
    
2. Of or made from or using substances produced by or used in reactions involving atomic or molecular changes
   "chemical fertilizer"

1. Material produced by or used in a reaction involving changes in atoms or molecules
   "The lab stored various chemicals in clearly labelled containers";
   - chemical substance

Derived forms: chemicals

Type of: material, stuff

Encyclopedia: Chemical, biological, radiological, and nuclear