Definition of "biological" []

• Of, relating to, caused by, or affecting life or living organisms: biological processes such as growth and digestion. (adjective)
• Having to do with biology. (adjective)
• Related by blood or genetic lineage: the child's biological parents; his biological sister. (adjective)
• A preparation, such as a drug, a vaccine, or an antitoxin, that is synthesized from living organisms or their products and used medically as a diagnostic, preventive, or therapeutic agent. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Normative teleosemantics can be construed as making a similar move: Here, it is those dispositions realizing the biological function of the mechanism of using an expression that determine meaning (where ˜biological function™ is taken to be something normative; cf. Millikan 1990,"
• "Use the term biological parents to refer to the nonadoptive parents."
• "When you hear the term biological clock, you probably think of women, because women are often the ones who need to worry about the impact of age on pregnancy."