astronomical-refraction

as·tro·nom·i·cal-re·frac·tion

A a

- US Pronunciation
- US IPA
- [as-truh-nom-i-kuh l or as-truh-nom-ik ri-frak-shuh n]
- /ˌæs trəˈnɒm ɪ kəl or ˌæs trəˈnɒm ɪk rɪˈfræk ʃən/

- US Pronunciation
- US IPA
- [as-truh-nom-i-kuh l or as-truh-nom-ik ri-frak-shuh n]
- /ˌæs trəˈnɒm ɪ kəl or ˌæs trəˈnɒm ɪk rɪˈfræk ʃən/

Definitions of astronomical-refraction word

noun astronomical-refraction Physics. the change of direction of a ray of light, sound, heat, or the like, in passing obliquely from one medium into another in which its wave velocity is different. 1
noun astronomical-refraction Ophthalmology. the ability of the eye to refract light that enters it so as to form an image on the retina. the determining of the refractive condition of the eye. 1
noun astronomical-refraction Astronomy. Also called astronomical refraction. the amount, in angular measure, by which the altitude of a celestial body is increased by the refraction of its light in the earth's atmosphere, being zero at the zenith and a maximum at the horizon. the observed altered location, as seen from the earth, of another planet or the like due to diffraction by the atmosphere. 1

before 1570

One of the 33% oldest English words

First recorded in 1570-80, refraction is from the Late Latin word refrāctiōn- (stem of refrāctiō). See refract, -ion

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

This term is known only to a narrow circle of people with rare knowledge. Only 1% of English native speakers know the meaning of this word.

According to our data most of word are more popular. This word is almost not used. It has a much more popular synonym.

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