Aril
(redirected from Arillus)Also found in: Dictionary, Thesaurus, Medical.
aril
[′ar·əl] (botany)
An outgrowth of the funiculus in certain seeds that either remains as an appendage or envelops the seed.
Aril
(also caruncle), an appendage of a seed. Arils, which are usually succulent and fleshy, attract birds and ants that distribute the seeds. Some types of arils are called arillodes and arilli.