trihedron
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Trihedron — Tri*he dron, n. [Pref. tri + Gr. ? a seat, base.] (Geom.) A figure having three sides. [1913 Webster] … The Collaborative International Dictionary of English
trihedron — noun A geometric figure composed of three planes meeting at a single vertex. See Also: trihedral … Wiktionary
trihedron — [trʌɪ hi:drən, hɛdrən] noun (plural trihedra drə or trihedrons) a solid figure having three sides or faces (in addition to the base or ends). Derivatives trihedral adjective &noun Origin C19 (earlier (C18) as trihedral): from … English new terms dictionary
trihedron — tri·he·dron … English syllables
trihedron — /traɪˈhidrən/ (say truy heedruhn) noun (plural trihedrons or trihedra /traɪˈhidrə/ (say truy heedruh)) the figure determined by three planes meeting in a point …
trihedron — n. solid figure of three planes. ♦ trihedral, a … Dictionary of difficult words
trihedron — n. a figure of three intersecting planes … Useful english dictionary
Darboux frame — In the differential geometry of surfaces, a Darboux frame is a natural moving frame constructed on a surface. It is the analog of the Frenet–Serret frame as applied to surface geometry. A Darboux frame exists at any non umbilic point of a surface … Wikipedia
Frenet–Serret formulas — Binormal redirects here. For the category theoretic meaning of this word, see Normal morphism. In vector calculus, the Frenet–Serret formulas describe the kinematic properties of a particle which moves along a continuous, differentiable curve in… … Wikipedia
triedral — Trihedral Tri*he dral, a. [See {Trihedron}.] (Geom.) Having three sides or faces; thus, a trihedral angle is a solid angle bounded by three plane angles. [Written also {triedral}.] [1913 Webster] … The Collaborative International Dictionary of English
