arrangement

Main Entry:ionFunction:nounEtymology:Greek, neuter of i*n, present participle of ienai to go ?more at ISSUEDate:circa 18341 : an atom or group of atoms that carries a positive or negative electric charge as a result of having lost or gained one or more electrons2 : a charged subatomic particleMain Entry: baseFunction:nounInflected Form:plural bas s \*b*-s*z\Etymology:Middle English, from Anglo-French, from Latin basis, from Greek, step, base, from bainein to go ?more at COMEDate:13th century1a : any of various typically water-soluble and bitter tasting compounds that in solution have a pH greater than 7, are capable of reacting with an acid to form a salt, and are molecules or ions able to take up a proton from an acid or able to give up an unshared pair of electrons to an acid b : any of the five purine or pyrimidine bases of DNA and RNA that include cytosine, guanine, adenine, thymine, and uracilMain Entry:denoteFunction:transitive verbEtymology:Middle French denoter, from Latin denotare, from de- + notare to noteDate:15621 : to serve as an indication of : BETOKEN *the swollen bellies that denote starvation*2 : to serve as an arbitrary mark for *red flares denoting danger*3 : to make known : ANNOUNCE *his crestfallen look denoted his distress*4 a : to serve as a linguistic expression of the notion of : MEAN b : to stand for : DESIGNATEMain Entry: bufferFunction:nounUsage:often attributiveEtymology:buff, verb, to react like a soft body when struckDate:18351 : any of various devices or pieces of material for reducing shock or damage due to contact2 : a means or device used as a cushion against the shock of fluctuations in business or financialactivity3 : something that serves as a protective barrier: as a : BUFFER STATE b : a person who shields another especially from annoying routine matters c : MEDIATOR 14 : a substance capable in solution of neutralizing both acids and bases and thereby maintaining the original acidity or basicity of the solution; also : a solution containing such a substance5 : a temporary storage unit (as in a computer); especially : one that accepts information at one rate and delivers it at anotherMain Entry:hydrochloric acidFunction:nounEtymology:International Scientific V ocabularyDate:1819: an aqueous solution of hydrogen chloride HCl that is a strong corrosive irritating acid, is normally present in dilute form in gastric juice, and is widely used in industry and in the laboratoryMain Entry:muriatic acidFunction:nounEtymology:French muriatique, from Latin muriaticus pickled in brine, from muria brineDate:1756: HYDROCHLORIC ACIDMain Entry:ammoniaFunction:nounEtymology:New Latin, from Latin sal ammoniacus sal ammoniac, literally, salt of Ammon, from Greek amm*niakos of Ammon, from Amm*n Ammon, Amun, an Egyptian god near whose temple at the Siwa oasis it was extractedDate:17891 : a pungent colorless gaseous alkaline compound of nitrogen and hydrogen NH3 that is very soluble in water and can easily be condensed to a liquid by cold and pressure2 : AMMONIA WATERMain Entry:lyeFunction:nounEtymology:Middle English, from Old English l*ag; akin to Old High German louga lye, Latin lavare, lavere to wash, Greek loueinDate:before 12th century1 : a strong alkaline liquor rich in potassium carbonate leached from wood ashes and used especially in making soap and for washing; broadly : a strong alkaline solution (as of sodium hydroxide or potassium hydroxide)2 : a solid caustic (as sodium hydroxide)Main Entry:protégéFunction:nounEtymology:French, from past participle of prot*ger to protect, from Middle French, from Latin protegereDate:1787: one who is protected or trained or whose career is furthered by a person of experience, prominence, or influenceMain Entry:circusesFunction:nounUsage:often attributiveEtymology:Middle English, from Latin, circle, circus ?more at CIRCLEDate:14th century1 a : a large arena enclosed by tiers of seats on three or all four sides and used especially for sports or spectacles (as athletic contests, exhibitions of horsemanship, or in ancient times chariot racing)b : a public spectacle2 a : an arena often covered by a tent and used for variety shows usually including feats of physical skill, wild animal acts, and performances by clowns b : a circus performance c : the physical plant, livestock, and personnel of such a circus d : something suggestive of a circus (as in frenzied activity, sensationalism, theatricality, or razzle-dazzle) *a media circus*3 a obsolete : CIRCLE, RING b British : a usually circular area at an intersection of streetsMain Entry:sulfur(sulphur)Function:nounEtymology:Middle English sulphur brimstone, from Latin sulpur, sulphur, sulfurDate:14th century: a nonmetallic element that occurs either free or combined especially in sulfides and sulfates, is a constituent of proteins, exists in several allotropic forms including yellow orthorhombic crystals, resembles oxygen chemically but is less active and more acidic, and is used especially in the chemical and paper industries, in rubber vulcanization, and in medicine for treating skin diseases ? see ELEMENT tableMain Entry:phosphorus(phosphorous)Function:nounUsage:often attributiveEtymology:New Latin, from Greek ph*sphoros light-bearing ?more at PHOSPHORDate:16451 : a phosphorescent substance or body; especially : one that shines or glows in the dark2 also phos ho ous \same\ : a nonmetallic element of the nitrogen family that occurs widely especially as phosphates ? see ELEMENT tableMain Entry:nucleotideFunction:nounEtymology:International Scientific V ocabulary, irregular from nucle- + -ideDate:1908: any of several compounds that consist of a ribose or deoxyribose sugar joined to a purine or pyrimidine base and to a phosphate group and that are the basic structural units of nucleic acids (as RNA and DNA) ? compare NUCLEOSIDEMain Entry:tuberculosisFunction:nounEtymology:New LatinDate:1882: a highly variable communicable disease of humans and some other vertebrates that is caused by the tubercle bacillus and rarely in the United States by a related mycobacterium (Mycobacterium bovis), that affects especially the lungs but may spread to other areas (as the kidney or spinal column), and that is characterized by fever, cough, difficulty in breathing, formation of tubercles, caseation, pleural effusions, and fibrosis。