Chemistry

kem′is-tri, formerly Chym′istry , n. the science which treats of the properties of substances both elementary and compound, and of the laws of their combination and action one upon another.— adjs. Chem′ic , -al ( Chem′ico- , in many compound words), Chemiat′ric (a Para cels i an term, Gr. chēmeia , chemistry, iatreia , medical treatment).— adv. Chem′ically .— n.pl. Chem′icals , substances which form the subject of chemical effects.— ns. Chem′ism , chemical action; Chem′ist , one skilled in chemistry, specially a druggist or apothecary.— Chemical affinity , the name given to the tendency to combine with one another which is exhibited by many substances, or to the force by which the substances constituting a compound are held together; Chemical notation , a method of expre ing the composition of chemical substances and representing chemical changes, by certain known symbols and formulæ; Chemical works , manufactories where chemical proce es are carried on for trade, as alkali works , . [From Alchemy (q.v.).]