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na·do·lol

(nā-dōlōl)

A beta-blocker drug, C₁₇H₂₇NO₄, used to treat hypertension and angina pectoris.

[NA(PHTHALENE) + d(iol), compound having two attached hydroxy groups + -olol, beta-blocker suff. (from PROPRANOLOL).]

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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