The word "cannabinoid" refers to a type of chemical compound found in cannabis plants. These compounds can interact with the cells in our body to produce various effects, such as relaxation or pain relief. Full definition
«Dogs are especially responsive to phytocannabinoids as they have the highest concentration of cannabinoid receptors in their brains and bodies compared to other animals, including humans.» (petbusiness.com)
The next step was the discovery of cannabinoid receptors in a rat's brain. (botahemp.com)
For instance, they have found synthetic cannabinoids in some liquids that weren't labelled as containing any drug other than nicotine but were suspiciously expensive. (newscientist.com)