Hay 2 definiciones de iris en inglés:

Share this entry

Share this page

iris1

Saltos de línea: iris
Pronunciación: /ˈʌɪrɪs
 
/

sustantivo

1A flat, coloured, ring-shaped membrane behind the cornea of the eye, with an adjustable circular opening (pupil) in the centre.
Example sentences
  • The thin sheet of circular muscle of the iris which constricts the pupil of the eye is also known as a sphincter.
  • The walking wounded were often blind, their pupils, irises, and corneas burned out.
  • The colored circular membrane in the eye just behind the cornea is called the iris.
1.1 (also iris diaphragm) An adjustable diaphragm of thin overlapping plates for regulating the size of a central hole, especially for the admission of light to a lens.
Example sentences
  • The incorporation of a variable iris diaphragm into the optical couplers allows the power of the beams to be independently set.
  • In experiments to find the effect of lens diameter he invented the familiar iris diaphragm.
  • This is the job of the iris diaphragm, a series of overlapping metal plates that can fold in on each other or expand out.
2A plant with showy flowers, typically of purple or yellow, and sword-shaped leaves. Irises are native to both Eurasia and North America and widely cultivated as ornamentals.
Example sentences
  • The newspaperman had a love for a myriad of different flower species and soon divided his interests between roses, irises, lilacs and native California plants.
  • It spreads by underground fleshy stems called rhizomes; rhizomes are found on many plants, from irises to agapanthus, from ferns to Bermuda grass.
  • Daffodils, iris, tulips, gladiolus, hyacinth, and daylilies are just some of the many bulb favorites.

verbo

[no object, with adverbial of direction] Volver al principio  
(Of an aperture, typically that of a lens) open or close in the manner of an iris or iris diaphragm.
Example sentences
  • Ann tugged at his arm and pointed down to the hull's underbelly: a round opening had irised out in it, brightly lit from inside.
  • A swirling vortex of yellow and white light irised open from a small dot to a man-sized portal just above the deck in front of Illeen.
  • As the last scene irised out to the familiar credits I was actually happy to have it all over.

Origen

modern Latin, via Latin from Greek iris 'rainbow, iris'.

More
  • In classical mythology Iris was the goddess of the rainbow and a messenger of the gods. People saw the rainbow as a bridge or road let down from heaven for her to carry her messages along. The Latin and Greek word iris, taken from her name and meaning ‘rainbow’, is also in iridescent and the name of the chemical element iridium, which forms compounds of various colours. The name iris for the membrane behind the cornea of the eye appears to derive from the variety of its colours. As a name for a flowering plant, iris dates from the late Middle Ages.

Words that rhyme with iris

Osiris

Definición de iris en:

Share this entry

Share this page

 

Obtenga más de Oxford Dictionaries

Suscribirse para eliminar anuncios y acceder a los recursos premium

Hay 2 definiciones de iris en inglés:

Share this entry

Share this page

Iris2

Saltos de línea: Iris
Pronunciación: /ˈʌɪrɪs
 
/
Greek Mythology
The goddess of the rainbow, who acted as a messenger of the gods.

Definición de iris en:

Share this entry

Share this page

 

¿Qué te llama la atención de esta palabra o frase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.