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ren·i·form

(rĕnə-fôrm′, rēnə-)

adj.

Shaped like a kidney: a reniform leaf.

[Latin rēnēs, kidneys + -FORM.]

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reniform

reniform leaf

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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