Biological is the adjectival form of "biology", the study of life. Biological may also refer to: Biological agent, an infectious disease or toxin that can be used in bioterrorism or biological warfare Biological process Biological relationship, a measure of the degree of consanguinity Look up biological in Wiktionary, the free dictionary. Biologic (disambiguation) Biological material (disambiguation) Biological warfare Biopharmaceutical, a drug that is synthesized from living organisms or their products and used as a medical treatment Organic (disambiguation) This disambiguation page lists articles associated with the title Biological.If an internal link led you here, you may wish to change the link to point directly to the intended article.