hydro char is

[Gr. hydro char is =Grace of the waters, the name of a frog ( Batrach., 229); hydro charès delighting in water; pref. hydro- (1), and Gr. char is favor, grace.] Bot . Frog-bit. The typical genus of the order Hydrocharidaceae (q. v.). It is diœcio us; the male flowers with six to twelve stamens, three or six without anthers. Female flowers solitary, long peduncled. Hy drocharis mors us ranæ is a plant with orbicular reniform leaves and white flowers, found in ponds and ditches. hy-dro-chlör' āte, s. [Pref. hy dro- (2), and Eng. chlorate (q. v.).] Chemist.: Also wrongly called hydrochloride. A compound formed by the molecular union of hydrochloric acid with a Hydro char is. base or an alkaloid, as C6H5NH2 HCl, hydro chlorate of aniline, or aniline hydro chlorate. Chloride of ammonium, NH4Cl, is probably a similar compound, and should be called ammonium hydro chlorate, NH3 HCl, the nitrogen being a triad and the molecule of HCI being united by molecular attraction to the molecule of ammonia, in the same manner in which the molecules of the water of crystallization in CuSO4*5H2O, blue crystallized cupric sul phate, are united with the molecules of CuSO4. hydro chlorate of morphia, 8. [MORPHIA.] hy-dro-chlöre, s . [Pref. hydro- (1), and Greek chloros =yellowish-green, because under the blow pipe it becomes of that color.] Min.: The same as PYROCHLORE (q.v.). hy-dro-chlör-ic, a. [Prefix hydro- (2), and chloric (q. v.).] Chem. Compounded of chlorine and hydrogen. hydrochloric-acid, s. 1. Chem.: HCl. Discovered by Priest ley in 1772. It is a colorle , pungent, irritating gas, which destroys vegetation when liberated from soda works. It can be liquefied under a pre ure of forty atmospheres at 10. It is incombustible and extinguishes flames; it readily absorbs moisture, fuming in a moist atmosphere. It di olves about 450 volumes of HCl at ordinary temperatures; the strongest solution has a density of 1.21, and fumes in the air; at 180° hydrochloric acid and water distill over, the distillate has the specific gravity of 11, and contains about 20 per cent. of acid. Hydrochloric acid is prepared by heating a mixture of twelve parts by weight of sodium chloride with twenty parts of H2SO and eight of water. Hydrochloric acid forms salts called chlorides. Hydrogen and chlorine unite directly when exposed to diffused daylight without condensation, forming hydrochloric acid, H2+Cl2=2HCl. The mixture explodes in direct sunlight. 2. Phar .: Hydrochloric acid is used to prepare Acidum hydrochloricum dilutum , dilute hydrochloric acid, a refrigerant, tonic, and astringent; it is given for dyspepsia, and used as a gargle in diphtheria. Concentrated hydrochloric acid is an acrid poison, and is used externally as a powerful caustic. hy-dro-chlör-ide, s . [HYDRO CHLORATE.]