释义 |
binormal Math.|baɪˈnɔːməl| [f. bi- prefix2 II + normal.] (See quot. 1848.)
1848Salmon Analyt. Geom. (1865) §353 The normal perpendicular to that [the osculating] plane..being normal to two consecutive elements of the curve, has been called by M. Saint-Venant the Binormal. 1857Price Infin. Calculus I. 512 The former [line] has the distinctive name of binormal. |