ar-
See also: Appendix:Variations of "ar"
English edit
Etymology 1 edit
Extracted from the word aromatic.
Prefix edit
ar-
- (organic chemistry) Forming classification names for classes of organic compounds that contain a carbon skeleton and one or more aromatic rings.
- 1900, Edgar Fahs Smith (English translator), R. Anschütz (German editor), Victor von Richter's Organic Chemistry: or, Chemistry of the Carbon Compounds, Third American Edition, Volume II, P. Blakiston's Son & Co., page 393:
- Potassium permanganate oxidizes ac-tetrahydronaphtylamine to o-hydrocinnam-carboxylic acid (p. 245); ar-tetrahydronaphthylamine, however, because of the oxidation of its amided benzene nucleus, is changed to adipic acid together with oxalic acid (B. 22, 767): […]
- 1919 January 10, C. J. West, abstract of G. Schroeter and K. Thomas, “Transformation of tetrahydronaphthalene (tetralin) in the animal body”; in American Chemical Society, Chemical Abstracts, Volume 13, Number 1, page 43:
- ar-Tetrahydro-α-carbamidonaphthalene, C11H14ON2, crystallized in square plates from alc., soften at 198° and melts at about 206° (quickly heated, at 212°).
- 2006, Amit Arora, Aromatic Organic Chemistry, Discovery Publishing House, published 2007, →ISBN, page 173:
- 1-Naphthylamine is reduced by sodium and isopentanol to ar-tetrahydro-1-naphthylamine; the prefix ar- is the abbreviation of aromatic and indicates that the four hydrogen atoms are not in the ring containing the amino-group: […]
- 1900, Edgar Fahs Smith (English translator), R. Anschütz (German editor), Victor von Richter's Organic Chemistry: or, Chemistry of the Carbon Compounds, Third American Edition, Volume II, P. Blakiston's Son & Co., page 393:
Etymology 2 edit
Shortened from area (because the function describes the area under a hyperbola), by analogy with arc-, the corresponding prefix for the circular trigonometric functions.
Prefix edit
ar-
- (mathematics, trigonometry) Used to form the names of inverse hyperbolic trigonometric functions, and the symbols for these functions.
References edit
Anagrams edit
Aka-Bea edit
Prefix edit
ar-
- prefix for limbs or upright things
Old Irish edit
Etymology edit
From Proto-Celtic *ɸare-. Prefix form of ar (“in front of”).
Pronunciation edit
Prefix edit
ar-
Derived terms edit
Tocharian A edit
Etymology edit
From Proto-Tocharian *er- (whence also Tocharian B er-), from Proto-Indo-European *h₃er- (“to move, stir”).
Verb edit
ar-
- to evoke, call up
- to produce, yield, bring forth
Welsh edit
Alternative forms edit
- er- (with i-affection)
Etymology edit
From Proto-Brythonic *ar-, from Proto-Celtic *ɸare.[1]
Pronunciation edit
Prefix edit
ar-
Derived terms edit
Mutation edit
Welsh mutation | |||
---|---|---|---|
radical | soft | nasal | h-prothesis |
ar- | unchanged | unchanged | har- |
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs. |
References edit
- ^ Morris Jones, John (1913) A Welsh Grammar, Historical and Comparative, Oxford: Clarendon Press, § 156 i (6)
Further reading edit
- R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “ar-”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies