• (n.) A false aril; an aril originating from the micropyle instead of from the funicle or chalaza of the ovule. The mace of the nutmeg is an arillode.
Ar'il·lode noun [ Arillus + Greek ... form.] (Botany) A false aril; an aril originating from the micropyle instead of from the funicle or chalaza of the ovule. The mace of the nutmeg is an arillode. 
An aril-like structure, or false aril; a coating or covering of the seed arising from its own surface, and not from the funiculus.