noun, plural an·nat·tos.
Origin of annatto
Examples from the Web for annatto
A quantity of turmeric roots and annatto seeds are pounded separately in mortars until they are reduced to a very fine state.
Cheese, annatto, bole (Armenian), and other colouring matters.
Annatto is sometimes added to milk to increase its richness of color.The Mother and Her Child|William S. Sadler
Put four pounds of salt butter into a churn, with four quarts of new milk and a small portion of annatto.
These are then separately treated with water and pressed, the result being a turmeric water and an annatto water.