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web·er

(wĕbər, vābər)

n. Abbr. Wb

The SI-derived unit of magnetic flux, equal to the flux that produces an electromotive force of one volt in a conducting loop when the flux is uniformly reduced to zero within one second. See Table at measurement.

[After Wilhelm Eduard Weber (1804-1891), German physicist.]

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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