Definitions of Directrix [ɪˈrɛk trɪˌsiz, daɪ-, ˌdaɪ rɛkˈtraɪ siz]

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Definition of 'Directrix'

Random House Webster's College Dictionary

1. (n.) directrix
a fixed line used in the description of a curve or surface.

2. directrix
Archaic.

Etymology: (1695–1705)

Definition of 'Directrix'

Webster Dictionary

1. (noun) Directrix
a directress

2. (noun) Directrix
a line along which a point in another line moves, or which in any way governs the motion of the point and determines the position of the curve generated by it; the line along which the generatrix moves in generating a surface

3. (noun) Directrix
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

'Directrix' - Nearby Entries
directories directress directrix directrixes

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