COLOSTRAL Meaning of COLOSTRAL in English kəˈlästrəl adjectiveor co·los·tric -rik ; or co·los·trous -rəsEtymology: colostr um + -al or -ic or -ous : of, relating to, or caused by colostrum Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012