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Webster’s Dictionary (1828)

98,828 entries. Headwords are matched first, then definition text.

1,428 words match “ACID”

HUMATE n.
A salt of humic acid.
HUMIC a.
Pertaining to, or derived from, vegetable mold; as, humic acid. See Humin.
HUMIN n.
w, amorphous substance, extracted from vegetable mold, and also produced by the action of acids on certain sugars and carbohydrates; -- called also humic acid, ulmin, gein, ulmic or geic acid, etc.
HYDRACRYLIC a.
Pertaining to, or designating, an isomeric variety of lastic acid that breaks down into acrylic acid and water.
HYDRIC a.
Hydric oxide (Chem.), water. -- Hydric sulphate (Chem.), hydrogen sulphate or sulphuric acid.
HYDRIODIC a.
Pertaining to, or derived from, hydrogen and iodine; -- said of an acid produced by the combination of these elements. Hydriodic acid (Chem.), a pungent, colorless gas, HI, usually prepared as a solution in water. It is strong reducing agent. Called also hydrogen iodine.
HYDRIODIDE n.
A compound of hydriodic acid with a base; -- distinguished from an iodide, in which only the iodine combines with the base.
HYDROBROMIC a.
Composed of hydrogen and bromine; as, hydrobromic acid. Hydrobromic acid (Chem.), a colorless, pungent, corrosive gas, HBr, usually collected as a solution in water. It resembles hydrochloric acid, but is weaker and less stable. Called also hydrogen bromide.
HYDROBROMIDE n.
A compound of hydrobromic acid with a base; -- distinguished from a bromide, in which only the bromine unites with the base.
HYDROCARBOSTYRIL n.
ystalline, nitrogenous hydrocarbon, C9H9NO, obtained from certain derivatives of cinnamic acid and closely related to quinoline and carbostyril.
HYDROCHLORIC a.
Pertaining to, or compounded of, chlorine and hydrogen gas; as, hydrochloric acid; chlorhydric. Hydrochloric acid (Chem.), hydrogen chloride; a colorless, corrosive gas, HCl, of pungent, suffocating odor. It is made in great quantities in the soda process, by the action of sulphuric acid on common salt. It has a great…
HYDROCHLORIDE n.
A compound of hydrochloric acid with a base; -- distinguished from a chloride, where only chlorine unites with the base.
HYDROCYANIC a.
Pertaining to, or derived from the combination of, hydrogen and cyanogen. Hydrocyanic acid (Chem.), a colorless, mobile, volatile liquid, HCN, having a characteristic peach-blossom odor. It is one of the most deadly poisons. It is made by the action of sulphuric acid on yellow prussiate of potassium (potassium ferrocya…
HYDROCYANIDE n.
A compound of hydrocyanic acid with a base; -- distinguished from a cyanide, in which only the cyanogen so combines.
HYDROFERRICYANIC n.
r containing, or obtained from, hydrogen, ferric iron, and cyanogen; as, hydroferricyanic acid. See Ferricyanic.
HYDROFERROCYANIC a.
containing, or obtained from, hydrogen, ferrous iron, and cyanogen; as, hydroferrocyanic acid. See Ferrocyanic.
HYDROFLUATE n.
A supposed compound of hydrofluoris acid and a base; a fluoride. [Archaic]
HYDROFLUORIC a.
Pertaining to, or containing, hydrogen and fluorine; fluohydric; as, hydrofluoric acid. Hydrofluoric acid (Chem.), a colorless, mobile, volatile liquid, HF, very corrosive in its action, and having a strong, pungent, suffocating odor. It is produced by the action of sulphuric acid on fluorite, and is usually collected…
HYDROFLUOSILICATE n.
A salt of hydrofluosilic acid; a silicofluoride. See Silicofluoride.
HYDROGEN n.
getable origin. It may by produced in many ways, but is chiefly obtained by the action of acids (as sulphuric) on metals, as zinc, iron, etc. It is very inflammable, and is an ingredient of coal gas and water gas. It is standard of chemical equivalents or combining weights, and also of valence, being the typical monad.…
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