noun (used with a singular verb)
the application of statistics to biological and medical data.
Origin of biostatistics
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
The science of statistics applied to the analysis of biological or medical data.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.