noun (used with a singular verb)
the branch of biology dealing with the structure of organisms in relation to their functions (opposed to biodynamics).
Origin of biostatics
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
(functioning as singular) the branch of biology that deals with the structure of organisms in relation to their function
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012