a yellowish liquid, especially rich in immune factors, secreted by the mammary gland of female mammals a few days before and after the birth of their young.
Origin of colostrum
First recorded in 1570–80, colostrum is from the Latin word colostrum, colustrum beestings
Also called foremilk.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the thin milky secretion from the nipples that precedes and follows true lactation. It consists largely of serum and white blood cells
Word Origin for colostrum
C16: from Latin, of obscure origin
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
1570s, from Latin colostrum "first milk from an animal," of unknown origin.
Online Etymology Dictionary, © 2010 Douglas Harper
The first milk secreted at the time of parturition, differing from the milk secreted later by containing more lactalbumin and lactoprotein, and also being rich in antibodies that confer passive immunity to the newborn.foremilk
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.