iris

A noun referring to a genus of flowering plants with showy petals and drooping sepals; also the colored muscular diaphragm of the eye that controls pupil size; and a mechanical diaphragm with adjustable opening used in optics.

ruСуществительное, обозначающее род цветущих растений с яркими лепестками и поникающими чашелистиками; также цветная мышечная диафрагма глаза, контролирующая размер зрачка; и механическая диафрагма с регулируемым отверстием, используемая в оптике.esSustantivo que designa un género de plantas con flores de pétalos vistosos y sépalos caídos; también la membrana muscular coloreada del ojo que regula el tamaño de la pupila; y un diafragma mecánico con abertura ajustable usado en óptica.frNom désignant un genre de plantes à fleurs aux pétales vifs et aux sépales retombants ; également le diaphragme musculaire coloré de l'œil qui contrôle la taille de la pupille ; et un diaphragme mécanique à ouverture réglable utilisé en optique.deBlütenpflanze mit auffälligen Blüten und bogig überhängenden Blättern; die farbige Ringmuskel im Auge, die die Pupillengröße steuert; sowie eine verstellbare Blende in der Optik.ptSubstantivo que designa um gênero de plantas floríferas com pétalas vistosas e sépalas pêndulas; também a membrana muscular colorida do olho que controla o tamanho da pupila; e o diafragma mecânico de abertura ajustável usado em óptica.zh指鸢尾属植物，花大而鲜艳，花瓣下垂；也指眼球中控制瞳孔大小的有色的虹膜；还指光学中可调节孔径的光阑。arاسم يدل على جنس من النباتات المزهرة ذات أزهار جميلة، وعلى القزحية وهي العضلة الملونة في العين التي تتحكم في حجم الحدقة، وعلى الحجاب الحاجز أو الفتحة القابلة للتعديل المستخدمة في البصريات.

1. Ornamental flowering plant B1 formal

   A perennial plant with sword-shaped leaves and erect stalks bearing bright-colored flowers, typically having three petals and three drooping sepals.

   • Irises bloom in late spring and add vibrant color to gardens.
   • She planted a row of purple irises along the fence.
   • The iris is a popular ornamental flower in many cultures.
   • Dutch painters often depicted irises in their still-life artwork.

   ruИрисesLirio (planta ornamental)frIris (plante)deIrisptÍriszh鸢尾arالسوسن

   Синонимы: flag

2. Colored part of the eye B2 formal medical

   The muscular diaphragm of the eye that controls the size of the pupil, regulating the amount of light entering and also determining eye color.

   • Her irises are a striking shade of green.
   • The doctor examined the patient's iris for signs of inflammation.
   • In dim light, the iris expands the pupil to let in more light.
   • Eye color is determined by the pigmentation of the iris.

   ruРадужная оболочкаesIris (parte del ojo)frIris (anatomie de l'œil)deRegenbogenhautptÍriszh虹膜arالقزحية

3. Adjustable diaphragm in optics C1 formal technical

   A device made of thin overlapping plates that can be adjusted to change the diameter of a central aperture, controlling the amount of light passing through a lens.

   • The camera's iris adjusts automatically to changing light conditions.
   • Photographers manually set the iris to control depth of field.
   • Modern lenses have a multi-blade iris for smoother bokeh.
   • The telescope's iris limits stray light for clearer observations.

   ruДиафрагмаesDiafragma ajustable en ópticafrDiaphragme à irisdeIrisblendeptDiafragmazh光圈arحجاب القزحية

   Синонимы: diaphragm

• irises plural form
• irises' possessive plural form
• iris's possessive singular form