An*not"to (&?;), Ar*not"to (&?;), n. [Perh. the native name.] A red or yellowish-red dyeing material, prepared from the pulp surrounding the seeds of a tree (Bixa orellana) belonging to the tropical regions of America. It is used for coloring cheese, butter, etc. [Written also Anatto, Anatta, Annatto, Annotta, etc.]

Ar*not"to (&?;), n. Same as Annotto.