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Definition of Colostrum
1. Noun. Milky fluid secreted for the first day or two after parturition.
Definition of Colostrum
1. n. The first milk secreted after delivery; biestings.
Definition of Colostrum
1. [n -S]
Medical Definition of Colostrum
1. The first milk secreted by an animal coming into lactation. May be especially rich in maternal lymphocytes and immunoglobulins and thus transfer immunity passively. (18 Jul 2002)