iris

名词 iris:

1. plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals
   同义词：flag, fleur-de-lis, sword lily
2. muscular diaphragm that controls the size of the pupil; it forms the colored portion of the eye
3. diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening
   同义词：iris diaphragm

1. Surgical removal of part of the iris of the eye.
   虹膜切除术手术切除部分虹膜
2. Shaped like a sword, as the leaf of an iris.
   剑形的，如鸢尾属植物的叶子
3. Inflammation of the iris of the eye.
   虹膜炎虹膜的感染发炎
4. Could you teach me how to adjust the iris of the camera?
   你能教我怎么调照相机的光圈吗？

i.ris

n.（名词）
【复数】 i.ris.es 或 i.ri.des [o.r-dôz., r.-]
The pigmented, round, contractile membrane of the eye, suspended between the cornea and lens and perforated by the pupil. It regulates the amount of light entering the eye.
虹膜：眼睛中一层带色素的，球形的可伸缩的薄膜，处于角膜和晶状体之间，为瞳孔所穿过。它调节进入眼球的光的数量
Any of numerous plants of the genusIris, having narrow sword-shaped leaves and showy, variously colored flowers.
鸢尾：一种鸢尾 属植物，有狭窄的剑状叶和显著的各色花朵
A rainbow or rainbowlike display of colors.
彩虹或彩虹般的色彩

来源：
Middle English [rainbow]
中古英语 [彩虹]
from Latin oris orid-
源自 拉丁语 oris orid-
from Greek [rainbow, iris of the eye] * see wei-
源自 希腊语 [彩虹；虹膜] *参见 wei-