Poison
From The School of Biomedical Sciences Wiki
A Poison1 is a substance that when coming into contact with organic matter, will cause damage to it on the molecular level. It differs from a Toxin and a Venom in the way that it is delivered into the organic matter.
Example
-Pesticide
-muscarine
-Digoxin
References
1. Science Learning Hub [cited 11/12/18] Available from:
https://www.sciencelearn.org.nz/resources/364-poisons-and-toxins