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Iris (from Greek Ἶρις Ancient Greek:, the messenger of the gods among themselves and the personification of ἶρις, the "rainbow") is a feminine name.. The name came into use in English-speaking countries in the 1500s, first in reference to the goddess, and was later used along with other Ancient Greek names revived by 17th-century British poets, such as Doris and Phyllis.
In ancient Greek religion and mythology, Iris (/ ˈ aɪ r ɪ s /; EYE-riss; Ancient Greek: Ἶρις, romanized: Îris, lit. 'rainbow,' [2] [3] Ancient Greek:) is a daughter of the gods Thaumas and Electra, [4] the personification of the rainbow and messenger of the gods, a servant to the Olympians and especially Queen Hera.
Iris most often refers to: Iris (anatomy), part of the eye; Iris (color), an ambiguous color term; Iris (mythology), a Greek goddess; Iris, a genus of flowering plants;
The iris controls the size of the pupil by means of contracting the iris sphincter muscle and/or the iris dilator muscle. The size of the pupils is dependent on many factors (including light, emotional state, cognitive load, arousal, stimulation), and can range from less than 2 mm in diameter, to as large as 9 mm in diameter.
The irises of human eyes exhibit a wide spectrum of colours. Eye color is a polygenic phenotypic trait determined by two factors: the pigmentation of the eye's iris [1] [2] and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris.
Iris is a flowering plant genus of 310 accepted species [1] with showy flowers.As well as being the scientific name, iris is also widely used as a common name for all Iris species, as well as some belonging to other closely related genera.
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Yellow Iris pseudacorus flowers on a blue field of water. The heraldist François Velde is known to have expressed the same opinion: [8] However, a hypothesis ventured in the 17th c. sounds very plausible to me. One species of wild iris, the Iris pseudacorus, yellow flag in English, is yellow and grows in marshes (cf. the azure field, for water ...