colostrum

noun

co·​los·​trum kə-ˈlä-strəm 

: milk secreted for a few days after childbirth and characterized by high protein and antibody content

colostral

kə-ˈlä-strəl 

adjective

Examples of colostrum in a Sentence

Recent Examples on the Web

Cud-chewing calves like Mabel don't get any antibodies in the womb and depend on the colostrum — or first milk — from their moms for those antibodies in the 24 hours after they are born. —Jordyn Noennig, jsonline.com, 20 Aug. 2025

Unlike electrolytes, colostrum or collagen supplements, salt is, well, salt. —Morgan Fargo, Vogue, 14 Aug. 2025

There’s no guarantee that a cow whose colostrum is harvested to be sold by a tradwife on Instagram had a happy, bucolic existence. —Yasmin Tayag, The Atlantic, 11 Aug. 2025

That potency, coupled with Effera’s patented technology, explains the $120 price tag, a significant premium in a category long dominated by $40 jars of powdered cow colostrum. —Gabby Shacknai, Forbes.com, 8 Aug. 2025

Word History

Etymology

Latin, beestings

First Known Use

1577, in the meaning defined above

Rhymes for colostrum

• nostrum
• rostrum

Kids Definition

colostrum

noun

co·​los·​trum kə-ˈläs-trəm 

: milk secreted for a few days after giving birth and having a high protein and antibody content

Medical Definition

colostrum

noun

co·​los·​trum kə-ˈläs-trəm 

: milk secreted for a few days after childbirth and characterized by high protein and antibody content

colostral

-trəl 

adjective