Definitions for: Oil


[n] oil paint used by an artist
[n] a slippery or viscous liquid or liquefiable substance not miscible with water
[v] administer an oil or ointment to ; often in a religious ceremony of blessing
[v] cover with oil, as if by rubbing; "oil the wooden surface"



Webster (1913) Definition: Oil (oil), n. [OE. oile, OF. oile, F. huile, fr. L. oleum;
akin to Gr. ?. Cf. Olive.]
Any one of a great variety of unctuous combustible
substances, not miscible with water; as, olive oil, whale
oil, rock oil, etc. They are of animal, vegetable, or mineral
origin and of varied composition, and they are variously used
for food, for solvents, for anointing, lubrication,
illumination, etc. By extension, any substance of an oily
consistency; as, oil of vitriol.

Note: The mineral oils are varieties of petroleum. See
Petroleum. The vegetable oils are of two classes,
essential oils (see under Essential), and {natural
oils} which in general resemble the animal oils and
fats. Most of the natural oils and the animal oils and
fats consist of ethereal salts of glycerin, with a
large number of organic acids, principally stearic,
oleic, and palmitic, forming respectively stearin,
olein, and palmitin. Stearin and palmitin prevail in
the solid oils and fats, and olein in the liquid oils.
Mutton tallow, beef tallow, and lard are rich in
stearin, human fat and palm oil in palmitin, and sperm
and cod-liver oils in olein. In making soaps, the acids
leave the glycerin and unite with the soda or potash.

Animal oil, Bone oil, Dipple's oil, etc. (Old Chem.), a
complex oil obtained by the distillation of animal
substances, as bones. See Bone oil, under Bone.

Drying oils, Essential oils. (Chem.) See under Drying,
and Essential.

Ethereal oil of wine, Heavy oil of wine. (Chem.) See
under Ethereal.

Fixed oil. (Chem.) See under Fixed.

Oil bag (Zo["o]l.), a bag, cyst, or gland in animals,
containing oil.

Oil beetle (Zo["o]l.), any beetle of the genus Meloe and
allied genera. When disturbed they emit from the joints of
the legs a yellowish oily liquor. Some species possess
vesicating properties, and are used instead of
cantharides.

Oil box, or Oil cellar (Mach.), a fixed box or reservoir,
for lubricating a bearing; esp., the box for oil beneath
the journal of a railway-car axle.

Oil cake. See under Cake.

Oil cock, a stopcock connected with an oil cup. See {Oil
cup}.

Oil color.
(a) A paint made by grinding a coloring substance in oil.
(b) Such paints, taken in a general sense.



Oil cup, a cup, or small receptacle, connected with a
bearing as a lubricator, and usually provided with a wick,
wire, or adjustable valve for regulating the delivery of
oil.

Oil engine, a gas engine worked with the explosive vapor of
petroleum.



Oil gas, inflammable gas procured from oil, and used for
lighting streets, houses, etc.

Oil gland.
(a) (Zo["o]l.) A gland which secretes oil; especially in
birds, the large gland at the base of the tail.
(b) (Bot.) A gland, in some plants, producing oil.

Oil green, a pale yellowish green, like oil.

Oil of brick, empyreumatic oil obtained by subjecting a
brick soaked in oil to distillation at a high temperature,
-- used by lapidaries as a vehicle for the emery by which
stones and gems are sawn or cut. --Brande & C.

Oil of talc, a nostrum made of calcined talc, and famous in
the 17th century as a cosmetic. [Obs.] --B. Jonson.

Oil of vitriol (Chem.), strong sulphuric acid; -- so called
from its oily consistency and from its forming the
vitriols or sulphates.

Oil of wine, [OE]nanthic ether. See under [OE]nanthic.

Oil painting.
(a) The art of painting in oil colors.
(b) Any kind of painting of which the pigments are originally
ground in oil.

Oil palm (Bot.), a palm tree whose fruit furnishes oil,
esp. El[ae]is Guineensis. See El[ae]is.

Oil sardine (Zo["o]l.), an East Indian herring ({Clupea
scombrina}), valued for its oil.

Oil shark (Zo["o]l.)
(a) The liver shark.
(b) The tope.

Oil still, a still for hydrocarbons, esp. for petroleum.

Oil test, a test for determining the temperature at which
petroleum oils give off vapor which is liable to explode.


Oil tree. (Bot.)
(a) A plant of the genus Ricinus (R. communis), from the
seeds of which castor oil is obtained.
(b) An Indian tree, the mahwa. See Mahwa.
(c) The oil palm.

To burn the midnight oil, to study or work late at night.


Volatle oils. See Essential oils, under Essential.


Oil, v. t. [imp. & p. p. Oiled; p. pr. & vb. n.
Oiling.]
To smear or rub over with oil; to lubricate with oil; to
anoint with oil.

Synonyms: anele, anoint, embrocate, inunct, oil color

See Also: almond oil, animal oil, babacu oil, babassu oil, bless, calamus oil, camphor oil, chaulmoogra oil, Chinese wood oil, coal oil, cohune fat, cohune oil, cohune-nut oil, colza oil, cover, croton oil, crude, crude oil, essential oil, expressed almond oil, fatty oil, fixed oil, flaxseed oil, fossil oil, fuel oil, fusel oil, grease, heating oil, hedeoma oil, hydnocarpus oil, hyssop oil, linseed oil, lipid, lipide, lipoid, lubricating oil, mineral oil, motor oil, neroli oil, oil paint, pennyroyal oil, petroleum, rape oil, rapeseed oil, rock oil, safflower oil, sassafras oil, shale oil, spike lavender oil, spike oil, stand oil, sweet almond oil, tall oil, tung oil, volatile oil

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