Extracted from the wordaromatic.
ar-
- (organic chemistry)Formingclassification names forclasses oforganic compounds that contain a carbon skeleton and one or morearomatic 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 toadipic 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, published2007,→ISBN,page173:1-Naphthylamine is reduced by sodium and isopentanol toar-tetrahydro-1-naphthylamine; the prefixar- is the abbreviation ofaromatic and indicates that the four hydrogen atoms arenot in the ring containing the amino-group:[…]
Shortened fromarea (because the function describes the area under a hyperbola), by analogy witharc-, the corresponding prefix for the circular trigonometric functions.
ar-
- (trigonometry)Used to form the names ofinverse hyperbolic functions, and the symbols for these functions.
- Synonyms:(sometimes proscribed)arc-,a-,−1
ar-
- prefix for limbs or upright things
ar-
- pretonic ofair-(“for-,fore-”)
FromProto-Tocharian*er- (whence alsoTocharian Ber-), fromProto-Indo-European*h₃er-(“to move, stir”).
ar-
- toevoke,call up
- toproduce,yield,bring forth
FromProto-Brythonic*ar-, fromProto-Celtic*ɸare.[1]
ar-
- on,above,sur-,super-,epi-
- ar- + nofio(“to swim”) → arnofio(“to float”)
- ar- + ysgrif(“writing”) → arysgrif(“inscription, epigraph”)
- near
- ar- + lliw(“colour”) → arlliw(“shade”)
- ar- + môr(“sea”) → arfor(“coast”)
Note: Certain mutated forms of some words can never occur in standard Welsh.
All possible mutated forms are displayed for convenience.
- R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “ar-”, inGeiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies
