aquafortis aq·ua·for·tis (ak'w?-fôr'tis, ä'kw?-) - n. Nitric acid, a
transparent, colorless to yellowish, fuming corrosive liquid, HNO3, a highly
reactive oxidizing agent used in the production of fertilizers, explosives, and
rocket fuels and in a wide variety of industrial metallurgical processes.
[New Latin : Latin aqua, water + Latin fortis, strong.]
ceruse of Venice is white lead
-- ce·ruse (s?-rus', sîr'us')
-
n. A white lead pigment, sometimes used in cosmetics.
[Middle English, from Old French, from Latin cerussa.]
coke
(kok) - n. The solid residue of impure carbon obtained from bituminous
coal and other carbonaceous materials after removal of volatile material by
destructive distillation. It is used as a fuel and in making steel.
tr. & intr.v., coked, cok·ing, cokes. To convert or be
converted into coke.
[Perhaps from Middle English colk, core.]
copperas cop·per·as (kop'?r-?s)
- n. Ferrous sulfate, a greenish crystalline compound, FeSO4·7H2O, used as a
pigment, fertilizer, and feed additive, in sewage and water treatment, and as a
medicine in the treatment of iron deficiency.
[Middle English coperose, a metallic sulfate, from Old French, from Medieval
Latin cuperosa, probably short for *aqua cuprosa, copper water, from Late Latin
cuprum, copper. See copper1.]
isinglass i·sin·glass (i'z?n-glas', i'zing-) -
n.
1. A transparent, almost pure gelatin prepared from the air bladder of
the sturgeon and certain other fishes and used as an adhesive and a clarifying
agent.
2. A gelatinous semitransparent substance obtained by cleaning and drying
the air bladders of the sturgeon, cod, hake, and other fishes. Isinglass is
manufactured in Russia, the United States, Canada, Brazil, Indonesia, the West
Indies, and the Philippines. It is used in the clarification of wines and beers,
as a stiffening for jellies, in court plaster, and in glues and cements.
The
name isinglass is also commonly applied to thin sheets of mica and sometimes to
a gelatinous substance obtained from certain seaweeds.
[By folk etymology (influenced by GLASS) from obsolete Dutch huizenblas, from
Middle Dutch husblase : hus, sturgeon + blase, bladder.]
lixiviation (lix·iv·i·a·tion) - n.
[Cf. F. lixiviation.]
Lixiviating; the process of separating a soluble substance from one that is
insoluble, by washing with some solvent, as water; leaching.
luted (lut) - n. A substance, such as dried clay or cement, for
packing a joint or coating a porous surface to make it impervious to gas or
liquid in order to make it tight. Also called luting.
tr.v., lut·ed, lut·ing, lutes. To coat, pack, or seal
with lute.
[Middle English, from Old French lut, from Latin lutum, potter's clay.]
pinchbeck pinch·beck (pinch'bek') - n. An alloy of zinc and copper
used as imitation gold.
[After Christopher Pinchbeck (1670?–1732), English watchmaker.]
pipkin
pip·kin (pip'kin) - n. A small earthenware or metal cooking pot.
[Possibly PIP(E), cask + –KIN.]
roch alum (Roche" al`um) (Chem.) A kind of alum occurring in small
fragments; — so called from Rocca, in Syria, whence alum is said to have been
obtained; — also called rock alum.
Roman vitriol vit·ri·ol (vit're-ol', -?l) - n. (H2SO4) a highly
corrosive acid made from sulfur dioxide; widely used in the chemical industry
1. Any of various sulfates of metals, such as ferrous sulfate, zinc sulfate, or
copper sulfate.
2. Sulfuric acid.
Vitriol is the name that alchemists gave to sulfuric acid. The name was also
used for various sulfate salts, such as copper (II) sulfate (blue vitriol, or
rarely Roman vitriol), zinc (II) sulfate (white vitriol), Iron (II) sulfate
(green vitriol), Iron (III) sulfate (vitriol of Mars), or cobalt (II) sulfate
(red vitriol).
Oil of vitriol is concentrated sulfuric acid so named due to its oily
appearance.
spelter
spel·ter (spel't?r) - n. Zinc, especially in the form of ingots, slabs, or
plates.
[Probably of Dutch or Low German origin.]
verdigrease = verdigriss
ver·di·gris (vûr'di-gres', -gris', -gre') -
n.
1. A blue or green powder consisting of basic cupric acetate used as a paint
pigment and fungicide.
2. A green patina or crust of copper sulfate or copper chloride formed on
copper, brass, and bronze exposed to air or seawater for long periods of time.
[Middle English vertegrez, from Old French verte grez, alteration of vert-de-Grice
: verd, green; see verdant + de, of (from Latin de; see de–) + Grice, Greece.]
3. verdigris (vûr'd?gres') , one of three copper acetates:
blue verdigris, Cu(CH3COO)2·CuO·6H2O; green verdigris, 2Cu(CH3COO)2·CuO·6H2O; or
neutral verdigris, Cu(CH3COO)2·H2O; or a mixture of them. It is a poisonous
gray-green to green-blue substance that is formed by the action of acetic acid
on copper or copper oxide, e.g., verdigris can form on copper pots used to cook
acidic foods such as tomatoes. Verdigris is used as a mordant in dyeing, as a
pigment, and in making Paris green. Verdigris may also be used to mean patina.
ver·juice (vûr'jus')
-
n. The acidic juice of crab apples or other sour fruit, such as unripe
grapes.
[Middle English verjus, from Old French vertjus : verd, unripe; see verdant +
jus, juice; see juice.]
