different between surface vs directrix
surface
English
Etymology
From French surface.
Pronunciation
- (UK) IPA(key): /?s??f?s/
- (US) IPA(key): /?s??f?s/
Noun
surface (plural surfaces)
- The overside or up-side of a flat object such as a table, or of a liquid.
- The outside hull of a tangible object.
- (figuratively) Outward or external appearance.
- “A tight little craft,” was Austin’s invariable comment on the matron; and she looked it, always trim and trig and smooth of surface like a converted yacht cleared for action. ¶ Near her wandered her husband, orientally bland, invariably affable, […].
- (mathematics, geometry) The locus of an equation (especially one with exactly two degrees of freedom) in a more-than-two-dimensional space.
- (fortification) That part of the side which is terminated by the flank prolonged, and the angle of the nearest bastion.
- (Can we find and add a quotation of Stocqueler to this entry?)
Synonyms
- overside
- superfice (archaic)
Derived terms
Related terms
- surficial
Translations
Verb
surface (third-person singular simple present surfaces, present participle surfacing, simple past and past participle surfaced)
- (transitive) To provide something with a surface.
- (transitive) To apply a surface to something.
- (intransitive) To rise to the surface.
- (transitive) To bring to the surface.
- 2007, Patrick Valentine, The Sage of Aquarius (page 182)
- Sage went immediately to work; Damien surfaced the submarine and readied the group to meet outside the hatch.
- 2007, Patrick Valentine, The Sage of Aquarius (page 182)
- (intransitive) To come out of hiding.
- (intransitive) For information or facts to become known.
- (transitive) To make information or facts known.
- (intransitive) To work a mine near the surface.
- (intransitive) To appear or be found.
Translations
French
Etymology
sur- +? face, calque of Latin superficies.
Pronunciation
- IPA(key): /sy?.fas/
- Homophones: surfaces, surfacent
Noun
surface f (plural surfaces)
- surface
Derived terms
Further reading
- “surface” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).
surface From the web:
- what surface pro do i have
- what surface has the highest albedo
- what surface has the most friction
- what surface has the least friction
- what surface has the lowest albedo
- what surface area
- what surfaces can you iron on
- what surface is pickleball played on
directrix
English
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.
Derived terms
- conic section directrix
- graph directrix
- ruled surface directrix
Translations
Anagrams
- creditrix
directrix From the web:
- directrix meaning
- what is directrix of parabola
- what is directrix of ellipse
- what is directrix in conic section
- what is directrix of hyperbola
- what is directrix and focus
- what does directrix represent
- what is directrix used for
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