DIRECTRIX

Noun

directrix (plural directrixes or directrices)

A female who directs; a directress.

(geometry) A line used to define a curve or surface; especially a line, the distance from which a point on a conic has a constant ratio to that from the focus.

Anagrams

• creditrix

Source: Wiktionary


Di*rect"rix, n.; pl. E. Directrixes (, L. Directrices (.

1. A directress. [R.] Jer. Taylor.

2. (Geom.) (a) 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. (b) 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.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

9 June 2025

HERMAPHRODITE

(noun) one having both male and female sexual characteristics and organs; at birth an unambiguous assignment of male or female cannot be made


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