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coc·cid·i·um

(kŏk-sĭdē-əm)

n. pl. coc·cid·i·a (-ē-ə)

Any of various parasitic apicomplexan protozoans that cause diseases such as toxoplasmosis in the digestive tract of vertebrates. Also called coccidian.

[New Latin Coccidium, former genus name : COCCUS + -idium, diminutive suff. (from Greek -idion).]

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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