biosignature(redirected from Biomarker (astrobiology))
Also found in: Medical.
1. A chemical or physical marker indicating the presence of life, especially something sought in geologic formations or in an extraterrestrial environment. Also called biomarker.
2. See biomarker.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.