from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. One branch of a parabola, terminating at the principal vertex of the curve.
from the GNU version of the Collaborative International Dictionary of English
- n. One branch of a parabola, being terminated at the principal vertex of the curve.
from The Century Dictionary and Cyclopedia
- n. In mathematics, a curve of such a nature that the powers of its ordinates are to each other as the next lower powers of its abscissas.
semi- + parabola (Wiktionary)