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
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.