From The Collaborative International Dictionary of English v.0.48 [gcide]:
Salt \Salt\, n. [AS. sealt; akin to OS. & OFries. salt, D. zout,
G. salz, Icel., Sw., & Dan. salt, L. sal, Gr. ?, Russ. sole,
Ir. & Gael. salann, W. halen, of unknown origin. Cf. {Sal},
{Salad}, {Salary}, {Saline}, {Sauce}, {Sausage}.]
1. The chloride of sodium, a substance used for seasoning
food, for the preservation of meat, etc. It is found
native in the earth, and is also produced, by evaporation
and crystallization, from sea water and other water
impregnated with saline particles.
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2. Hence, flavor; taste; savor; smack; seasoning.
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Though we are justices and doctors and churchmen . .
. we have some salt of our youth in us. --Shak.
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3. Hence, also, piquancy; wit; sense; as, Attic salt.
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4. A dish for salt at table; a saltcellar.
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I out and bought some things; among others, a dozen
of silver salts. --Pepys.
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5. A sailor; -- usually qualified by old. [Colloq.]
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Around the door are generally to be seen, laughing
and gossiping, clusters of old salts. --Hawthorne.
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6. (Chem.) The neutral compound formed by the union of an
acid and a base; thus, sulphuric acid and iron form the
salt sulphate of iron or green vitriol.
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Note: Except in case of ammonium salts, accurately speaking,
it is the acid radical which unites with the base or
basic radical, with the elimination of hydrogen, of
water, or of analogous compounds as side products. In
the case of diacid and triacid bases, and of dibasic
and tribasic acids, the mutual neutralization may vary
in degree, producing respectively basic, neutral, or
acid salts. See Phrases below.
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7. Fig.: That which preserves from corruption or error; that
which purifies; a corrective; an antiseptic; also, an
allowance or deduction; as, his statements must be taken
with a grain of salt.
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Ye are the salt of the earth. --Matt. v. 13.
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8. pl. Any mineral salt used as an aperient or cathartic,
especially Epsom salts, Rochelle salt, or Glauber's salt.
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9. pl. Marshes flooded by the tide. [Prov. Eng.]
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{Above the salt}, {Below the salt}, phrases which have
survived the old custom, in the houses of people of rank,
of placing a large saltcellar near the middle of a long
table, the places above which were assigned to the guests
of distinction, and those below to dependents, inferiors,
and poor relations. See {Saltfoot}.
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His fashion is not to take knowledge of him that is
beneath him in clothes. He never drinks below the
salt. --B. Jonson.
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{Acid salt} (Chem.)
(a) A salt derived from an acid which has several
replaceable hydrogen atoms which are only partially
exchanged for metallic atoms or basic radicals; as,
acid potassium sulphate is an acid salt.
(b) A salt, whatever its constitution, which merely gives
an acid reaction; thus, copper sulphate, which is
composed of a strong acid united with a weak base, is
an acid salt in this sense, though theoretically it is
a neutral salt.
{Alkaline salt} (Chem.), a salt which gives an alkaline
reaction, as sodium carbonate.
{Amphid salt} (Old Chem.), a salt of the oxy type, formerly
regarded as composed of two oxides, an acid and a basic
oxide. [Obsolescent]
{Basic salt} (Chem.)
(a) A salt which contains more of the basic constituent
than is required to neutralize the acid.
(b) An alkaline salt.
{Binary salt} (Chem.), a salt of the oxy type conveniently
regarded as composed of two ingredients (analogously to a
haloid salt), viz., a metal and an acid radical.
{Double salt} (Chem.), a salt regarded as formed by the union
of two distinct salts, as common alum, potassium aluminium
sulphate. See under {Double}.
{Epsom salts}. See in the Vocabulary.
{Essential salt} (Old Chem.), a salt obtained by
crystallizing plant juices.
{Ethereal salt}. (Chem.) See under {Ethereal}.
{Glauber's salt} or {Glauber's salts}. See in Vocabulary.
{Haloid salt} (Chem.), a simple salt of a halogen acid, as
sodium chloride.
{Microcosmic salt}. (Chem.). See under {Microcosmic}.
{Neutral salt}. (Chem.)
(a) A salt in which the acid and base (in theory)
neutralize each other.
(b) A salt which gives a neutral reaction.
{Oxy salt} (Chem.), a salt derived from an oxygen acid.
{Per salt} (Old Chem.), a salt supposed to be derived from a
peroxide base or analogous compound. [Obs.]
{Permanent salt}, a salt which undergoes no change on
exposure to the air.
{Proto salt} (Chem.), a salt derived from a protoxide base or
analogous compound.
{Rochelle salt}. See under {Rochelle}.
{Salt of amber} (Old Chem.), succinic acid.
{Salt of colcothar} (Old Chem.), green vitriol, or sulphate
of iron.
{Salt of hartshorn}. (Old Chem.)
(a) Sal ammoniac, or ammonium chloride.
(b) Ammonium carbonate. Cf. {Spirit of hartshorn}, under
{Hartshorn}.
{Salt of lemons}. (Chem.) See {Salt of sorrel}, below.
{Salt of Saturn} (Old Chem.), sugar of lead; lead acetate; --
the alchemical name of lead being Saturn.
{Salt of Seignette}. Same as {Rochelle salt}.
{Salt of soda} (Old Chem.), sodium carbonate.
{Salt of sorrel} (Old Chem.), acid potassium oxalate, or
potassium quadroxalate, used as a solvent for ink stains;
-- so called because found in the sorrel, or Oxalis. Also
sometimes inaccurately called {salt of lemon}.
{Salt of tartar} (Old Chem.), potassium carbonate; -- so
called because formerly made by heating cream of tartar,
or potassium tartrate. [Obs.]
{Salt of Venus} (Old Chem.), blue vitriol; copper sulphate;
-- the alchemical name of copper being Venus.
{Salt of wisdom}. See {Alembroth}.
{Sedative salt} (Old Med. Chem.), boric acid.
{Sesqui salt} (Chem.), a salt derived from a sesquioxide base
or analogous compound.
{Spirit of salt}. (Chem.) See under {Spirit}.
{Sulpho salt} (Chem.), a salt analogous to an oxy salt, but
containing sulphur in place of oxygen.
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From The Collaborative International Dictionary of English v.0.48 [gcide]:
Basic \Ba"sic\, a.
1. (Chem.)
(a) Relating to a base; performing the office of a base in
a salt.
(b) Having the base in excess, or the amount of the base
atomically greater than that of the acid, or exceeding
in proportion that of the related neutral salt.
(c) Apparently alkaline, as certain normal salts which
exhibit alkaline reactions with test paper.
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2. (Min.) Said of crystalline rocks which contain a
relatively low percentage of silica, as basalt.
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{Basic salt} (Chem.), a salt formed from a base or hydroxide
by the partial replacement of its hydrogen by a negative
or acid element or radical.
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