ARIL
- an exterior covering or appendage of some seeds (as of the yew) that develops after fertilization as an outgrowth from the ovule stalk
- usually fleshy appendage or covering of certain seeds, as of the bittersweet, Celastrus scandens, or the nutmeg
- an outer covering of certain seeds [n ARILS] : ARILED [adj], ARILLATE [adj], ARILLOID [adj]
- an outer covering of some seeds, also ARILLUS [n -S]