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arid zone
aridisol
Ariel
Aries
arietta
aright
Arikara
ariki
aril
arioso
arise
arista
aristo
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aril
ar·il [ árrəl ] (plural ar·ils)


noun 
Definition:
 
seed covering: a fleshy, often brightly colored seed covering in some plants. Its function is to draw attention to the seed to aid its dispersal by birds.
[Mid-18th century. Via modern Latin arillus< medieval Latin arilli "dried grape pips"]

ar·iled adjective
ar·il·late [ árrə làyt, árrə lət ] adjective
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