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al·be·do

(ăl-bēdō)

n. pl. al·be·dos

1. The fraction of incident electromagnetic radiation reflected by a surface, especially of a celestial body.

2. The spongy white tissue on the inside of the rind of citrus fruit.

[Late Latin albēdō, whiteness, from Latin albus, white; see albho- in the Appendix of Indo-European roots.]

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albedo

of a pomelo

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:

Indo-European Roots

Semitic Roots

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.

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