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cir·cu·la·tion

(sûr′kyə-lāshən)

1. Movement in a circle or circuit, especially the movement of blood through bodily vessels as a result of the heart's pumping action.

a. Movement or passage through a system of vessels, as of water through pipes; flow.

b. Free movement or passage.

3. The passing of something, such as money or news, from place to place or person to person.

a. The condition of being passed about and widely known; distribution.

b. Dissemination of printed material, especially copies of newspapers or magazines, among readers.

c. The number of copies of a publication sold or distributed.

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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