A fleshy, usually brightly colored cover of a seed, usually arising from the funiculus.
[Medieval Latin arillus, grape seed, from a Romance source akin to Italian arillo, seed coat, from Vulgar Latin *arēnula, grain of sand, from diminutive of Latin arēna, sand; see ARENA.]
aril·late′ (-lāt′, -lĭt) adj.
(click for a larger image)aril
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.