different between asteroid vs irene
asteroid
English
Pronunciation
- enPR: ?s't?-roid", IPA(key): /?æst??o?d/
Etymology 1
Borrowed from Ancient Greek ??????????? (asteroeid?s), from ????? (ast?r, “star”) + ????? (eîdos, “form”).
Noun
asteroid (plural asteroids)
- (zoology) Any member of the taxonomic class Asteroidea; a starfish
Related terms
Etymology 2
aster +? -oid Coined by William Herschel, terming these objects "star-like"
Noun
asteroid (plural asteroids)
- (astronomy) A naturally occurring solid object, which is smaller than a planet and is not a comet, that orbits a star
- (astronomy) In the Solar system, such a body that orbits within the orbit of Jupiter
Usage notes
The term "asteroid" has never been precisely defined. It was coined for objects which looked like stars in a telescope but moved like planets. These were known from the asteroid belt between Mars and Jupiter, and were later found co-orbiting with Jupiter (Trojan asteroids) and within the orbit of Mars. They were naturally distinguished from comets, which did not look at all starlike. Starting in the 1970s, small non-cometary bodies were found outside the orbit of Jupiter, and usage became divided as to whether to call these "asteroids" as well. Some astronomers restrict the term "asteroid" to rocky or rocky-icy bodies with orbits up to Jupiter. They may retain the term planetoid for all small bodies, and thus tend to use it for icy or rocky-icy bodies beyond Jupiter, or may use dedicated words such as centaurs, Kuiper belt objects, transneptunian objects, etc. for the latter. Other astronomers use "asteroid" for all non-cometary bodies smaller than a planet, even large ones such as Sedna and (occasionally) Pluto. However, the distinction between asteroid and comet is an artificial one; many outer "asteroids" would become comets if they ventured nearer the Sun. The IAU terminology since 2006 has been small Solar System body for any body that orbits the Sun directly and whose shape is not dominated by gravity.
Derived terms
Related terms
Translations
See also
- astroid
- comet
- meteor
- meteorite
- planetoid
Further reading
- asteroid in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
- asteroid in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
Anagrams
- ideators
Czech
Noun
asteroid m
- asteroid
Declension
See also
- planetka
Related terms
- See astro-
Further reading
- asteroid in Kartotéka Novo?eského lexikálního archivu
- asteroid in Slovník spisovného jazyka ?eského, 1960–1971, 1989
Estonian
Etymology
(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)
Noun
asteroid (genitive asteroidi, partitive asteroidi)
- asteroid
Declension
This noun needs an inflection-table template.
Further reading
- asteroid in Eesti keele seletav sõnaraamat
Indonesian
Noun
asteroid (first-person possessive asteroidku, second-person possessive asteroidmu, third-person possessive asteroidnya)
- asteroid
Romanian
Etymology
Borrowed from French astéroïde.
Noun
asteroid m (plural asteroizi)
- asteroid
Declension
Further reading
- asteroid in DEX online - Dic?ionare ale limbii române (Dictionaries of the Romanian language)
Serbo-Croatian
Noun
asterò?d m (Cyrillic spelling ?????????)
- asteroid
Declension
Slovene
Pronunciation
- IPA(key): /ast?r?í?t/
Noun
astero?d m inan
- asteroid
Inflection
Further reading
- “asteroid”, in Slovarji Inštituta za slovenski jezik Frana Ramovša ZRC SAZU, portal Fran
Swedish
Pronunciation
- Rhymes: -i?d
Noun
asteroid c
- asteroid
Declension
asteroid From the web:
- what asteroid will hit earth
- what asteroid killed the dinosaurs
- what asteroid hit the dinosaurs
- what asteroid hit earth
- what asteroids are a danger to the earth
- what asteroids have hit earth
- what asteroid did we land on
- what asteroid belt is ceres in
irene
English
Pronunciation
- IPA(key): /?a??i?n/
Noun
irene (plural irenes)
- (organic chemistry) The hydrocarbon formed by dehydration of an irone.
- 1952, The Terpenes, addenda to volumes 1 and 2, page 507:
- The configurations around the double bond in the side chain are based on considerations of the Raman spectra, dielectric constants, etc., and on comparatively small differences in reactivity; for example, neo-?-irone is converted into irene less readily than ?-irone, but forms an oxime more rapidly; [...]
- 1964, Samuel Coffey, E. H. Rodd, Martin Frederick Ansell, Chemistry of Carbon Compounds: Alicyclic Compounds, page 177:
- Ruzicka and his co-workers showed that the hydrocarbon irene, obtained on reduction of irone with red phosphorus/iodine, had the structure shown and this was confirmed by synthesis [...]
- 1952, The Terpenes, addenda to volumes 1 and 2, page 507:
Translations
Anagrams
- ERNIE, Ernie
Norwegian Bokmål
Noun
irene m
- definite plural of ire
irene From the web:
- what irene means
- what irene did to stylist
- what's irene in spanish
- what's irene in english
- irene what a feeling
- irene what's in my bag
- irene what not to wear
- irene what language
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