pres·ent participle (prĕzənt)
A participle expressing present action, in English formed by the infinitive plus -ing and used to express present action in relation to the time indicated by the finite verb in its clause, to form progressive tenses with the auxiliary be, and to function as a verbal adjective. See Usage Notes at participle, very.
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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:
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.