from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The strongest ablaut-grade in a series of vowels alternations in certain Indo-European languages, most notably Sanskrit, as well as in Proto-Indo-European.
- n. In Sanskrit grammar terminology, a technical term for a group of long vowels.
From Sanskrit वृद्धि (vṛddhi, "growth, increase"). (Wiktionary)