adj, noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A line that is at right angles to both the normal and the tangent of a point on a curve and, together with them, forms three orthogonal axes

Adjective

1. 1
   describing such a line not-comparable

Etymology

From bi- + normal.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.