(a.) Sour, sharp, or biting to the taste; tart; having the taste of vinegar: as, acid fruits or liquors. Also fig.: Sour-tempered.
(a.) Of or pertaining to an acid; as, acid reaction.
(n.) A sour substance.
(n.) One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also characterized by the power of destroying the distinctive properties of alkalies or bases, combining with them to form salts, at the same time losing their own peculiar properties. They all contain hydrogen, united with a more negative element or radical, either alone, or more generally with oxygen, and take their names from this negative element or radical. Those which contain no oxygen are sometimes called hydracids in distinction from the others which are called oxygen acids or oxacids.
Example Sentences:
(1) The amino acid sequence deduced from the nucleotide sequence contained both amino- and carboxyl-terminal sequences.
(2) F(420) is photolabile aerobically in neutral and basic solutions, whereas the acid-stable chromophore is not photolabile under these conditions.
(3) The high amino acid levels in the cells suggest that these cells act as inter-organ transporters and reservoirs of amino acids, they have a different role in their handling and metabolism from those of mammals.
(4) If ascorbic acid was omitted from the culture medium, the extensive new connective tissue matrix was not produced.
(5) The interaction of the antibody with both the bacterial and the tissue derived polysialic acids suggests that the conformational epitope critical for the interaction is formed by both classes of compounds.
(6) Arachidic acid was without effect, while linoleic acid and linolenic acid were (on a concentration basis) at least 5-times less active than arachidonic acid.
(7) An unsaturated fatty acid auxotroph of Escherichia coli was grown with a series of cis-octadecenoate isomers in which the location of the double bond varied from positions 3 to 17.
(8) The ability of azelastine to influence antigen-induced contractile responses (Schultz-Dale phenomenon) in isolated tracheal segments of the guinea-pig was investigated and compared with selected antiallergic drugs and inhibitors of arachidonic acid metabolism.
(9) After 4 to 6 hours of recirculation, accumulation of vasoactive amine, 5-hydroxytryptamine, its major metabolite, 5-hydroxyindole acetic acid, and its precursor amino acid, tryptophan were detected.
(10) Spectrophotometric determination of the sulfhydryl content in the animal tissue before (control) and after using 6,6'-Dithiodinicotinic acid is applied.
(11) This death is also dependent on the presence of chloride and is prevented with the non-selective EAA antagonist, kynurenic acid, but is not prevented by QA.
(12) However, four of ten young adult outer arm (relatively sun-exposed) and one of ten young adult inner arm (relatively sun-protected) fibroblasts lines increased their saturation density in response to retinoic acid.
(13) Microionophoretically applied excitatory amino acids induced firing of extracellularly recorded single units in a tissue slice preparation of the mouse cochlear nucleus, and the similarly applied antagonist 2-amino-5-phosphonovalerate (2APV) was demonstrated to be a selective N-methyl-D-aspartate (NMDA) receptor antagonist.
(14) The LD50 of the following metal-binding chelating drugs, EDTA, diethylenetriaminepentaacetic acid (DTPA), hydroxyethylenediaminetriacetic acid (HEDTA), cyclohexanediaminotetraacetic acid (CDTA) and triethylenetetraminehexaacetic acid (TTHA) was evaluated in terms of mortality in rats after intraperitoneal administration and was found to be in the order: CDTA greater than EDTA greater than DTPA greater than TTHA greater than HEDTA.
(15) Estimations of the degree of incorporation of 14C from the radioactive labeled carbohydrate into the glycerol and fatty acid moieties were carried out.
(16) The second amino acid residue influences not only the rate of reaction but also the extent of formation of the product of the Amadori rearrangement, the ketoamine.
(17) Leumorphin is a 29-amino-acid peptide derived from preproenkephalin B. Intracerebroventricular (i.c.v.)
(18) Hepatic lymph flow increased only after ethacrynic acid and mannitol administration.
(19) The subcellular distribution of sialyltransferase and its product of action, sialic acid, was investigated in the undifferentiated cells of the rat intestinal crypts and compared with the pattern observed in the differentiated cells present in the surface epithelium.
(20) A phytochemical investigation of an ethanolic extract of the whole plant of Echites hirsuta (Apocynaceae) resulted in the isolation and identification of the flavonoids naringenin, aromadendrin (dihydrokaempferol), and kaempferol; the coumarin fraxetin; the triterpene ursolic acid; and the sterol glycoside sitosteryl glucoside.
(1) For retrospective action to be taken, and an FA charge to follow, the decision of the panel must be unanimous.” The match between the sides ended in acrimony and two City red cards.
(2) Amid the acrimony of the failed debate on the Malaysia Agreement, something was missed or forgotten: many in the left had changed their mind.
(3) But some wise old heads sniff into their handkerchiefs because they have sat through too many costly "happy ever after" ceremonies that ended in acrimony.
(4) The sniping followed an article by Cameron in the Sunday Times , in which he called on the coalition to provide a "strong, decisive and united government" in the wake of acrimonious splits over Lords reform, warning that the public will not stand for "division and navel-gazing" at a time of social and economic insecurity.
(5) People didn't see, because it was so chaotic and acrimonious, that the Copenhagen accord turned out to be a strong platform for going forward.
(6) Exchanges between the parties became increasingly acrimonious in recent days ahead of the anticipated announcement.
(7) With the studies of Bordet, Metchnikoff's protégé, the essential resolution of the acrimonious debate was offered.
(8) Those talks appeared to come close to clinching a historic deal but the talks broke up in early hours of 10 November, amid some acrimony over who was responsible for the failure.
(9) Today's announcement could be seen as a victory for the ITV management and board's strategic vision over that of the spurned Tony Ball, the former BSkyB boss who was being lined up as the company's new chief executive until negotiations broke down acrimoniously last month.
(10) The result, after a series of fairly acrimonious meetings in Geneva and Paris last year, is three separate initiatives: the Accord, which involves more than 150 largely European brands; the Alliance, set up by US brands; and a joint effort by the UN and the Bangladeshi government.
(11) During a 90-minute hearing, MacDonald emphasised that it was their son who was suffering the most from this public and acrimonious custody battle.
(12) Momentum Hastings seems pleasantly free of the kind of dogmatic, acrimonious squabbles that have recently engulfed the movement at national level.
(13) The acrimonious battle, which the NUJ has branded a £4m “pension robbery” , will see FT journalists go out on a 24-hour strike for the first time in 30 years on Thursday if crunch talks fail.
(14) However, there was an acrimonious split when Omar al-Shishani , a Georgian-born Chechen who had previously served in the US-trained Georgian army, decided to merge the group with Isis.
(15) An evening that promised so much for West Ham United ended in disappointment, acrimony and a dash of farce, with Slaven Bilic sent to the stands after contesting one too many of Adrien Jaccottet’s decisions in the closing stages and Astra Giurgi seizing control of this Europa League third-round qualifier thanks to a comical own goal from Angelo Ogbonna.
(16) Acrimony over the Senate report hangs over the relationship between the CIA and the committee overseeing it.
(17) There has been an acrimonious debate about trends in inequality in health in the U.K. over the last couple of years.
(18) That friendship ended acrimoniously when Jackson outbid McCartney when the Beatles' publishing catalogue came up for sale in 1985 – essentially, Jackson now owned all of McCartney's 1960s songs.
(19) The acrimonious battle, which the NUJ has branded a £4m “ pension robbery ”, follows Japanese group Nikkei’s £844m takeover of FT Group last year.
(20) Preparatory talks last month in Bangkok ended in acrimonious squabbles .