reflex

English

Etymology

From Late Latin reflexus, past participle of reflectere (“to bend back”).

Noun

Wikipedia reflex (plural reflexes)

1. An automatic response to a simple stimulus which does not require mental processing.
2. (linguistics) A corresponding phoneme in a daughter language.

Translations

automatic response

Bulgarian: рефлекс (bg) (reflex) m. Esperanto: reflekso (eo) Finnish: refleksi (fi), heijaste (fi) French: réflexe (fr) German: Reflex (de) m. Greek: αντανακλαστικό (el) (andanaklastikό) n.

Italian: riflesso (it) m. Portuguese: reflexo (pt) Russian: рефлекс (ru) (refléks) m. Spanish: reflejo (es) m. Swedish: reflex (sv) c.

Adjective

reflex (comparative more reflex, superlative most reflex)

1. Bent, turned back or reflected.
2. Produced automatically by a stimulus.
3. (geometry, of an angle) Having greater than 180 degrees but less than 360 degrees.
   • 1878, James Maurice Wilson, Elementary Geometry, MacMillan, page 10:

     A polygon is said to be convex when no one of its angles is reflex.

   • 1895, David Eugen Smith and Wooster Woodruff Bernan, New Plane and Solid Geometry, page 7:

     An angle less than a right angle is said to be acute; one greater than a right angle but less than a straight angle is said to be obtuse; one greater than a straight angle but less than a perigon is said to be reflex or convex.

   • 1958, Howard Fehr, “On Teaching Dihedral Angle and Steradian” in The Mathematics Teacher, v 51, National Council of Teachers of Mathematics, page 275:

     If the reflex region is the interior of the angle, the dihedral angle is reflex.

   • 1991, B. Falcidieno et al, “Configurable Representations in Feature-based Modelling” in Eurographics '91: Proceedings, North-Holland, page 145:

     A reflex edge of a polyhedron is an edge where the inner dihedral angle subtended by two incident faces is greater than 180°.

   • 2001, Esther M. Arkin et al, “On the Reflexivity of Point Sets”, in Algorithms and data structures: 7th International Workshop, WADS 2001: Proceedings, Springer, page 195:

     We say that an angle is convex if it is not reflex.

   • 2004, Ana Paula Tomás and António Leslie Bajuelos, “Quadratic-Time Linear-Space Algorithms Generating Orthogonal Polygons with a Given Number of Vertices”, in Computational Science and Its Applications – ICCSA 2004 Proceedings, part 3, Springer, page 117:

     P denotes a polygon and r the number of reflex vertices.

Synonyms

• (of an angle): re-entrant

Verb

reflex (third-person singular simple present reflexes, present participle reflexing, simple past and past participle reflexed)

1. to bend, turn back or reflect
2. to respond to a stimulus

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Swedish

Noun

reflex c.

1. a reflex, a (quick and spontaneous) reaction
2. a reflector (tag, strip or band; carried by pedestrians and bicyclists to be visible from automobiles)

Declension

Declension of reflex

	singular		plural
Common	indefinite	definite	indefinite	definite
nominative	reflex	reflexen	reflexer	reflexerna
genitive	reflex	reflexens	reflexers	reflexernas