DIRECTRIX
\da͡ɪɹˈɛktɹɪks], \daɪɹˈɛktɹɪks], \d_aɪ_ɹ_ˈɛ_k_t_ɹ_ɪ_k_s]\
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A straight line so situated with respect to a conic section that the distance of any point of the curve from it has a constant ratio to the distance of the same point from the focus.
By Oddity Software
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A straight line so situated with respect to a conic section that the distance of any point of the curve from it has a constant ratio to the distance of the same point from the focus.
By Noah Webster.
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n. A woman who governs or directs;—in geometry, the line or plane along which another line or plane is supposed to move in the generation of a plane or solid figure;—a line CD, drawn at right angles to the axis A D, when produced to a distance D from the vertex E, equal to the distance of the vertex E from the focus A.
Word of the day
dust storm
- a windstorm that lifts up clouds of dust or sand a windstorm that lifts up clouds dust or sand; "it was the kind of duster not experienced in years"