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in certain animal and vegetable fats and oils, such as sperm oil, olive oil, etc. At low temperatures the acid is crystalline, but melts to an oily liquid above 14

A fat, liquid at ordinary temperatures, but solidifying at temperatures below 0° C., found abundantly in both the animal and vegetable kingdoms (see Palmitin). It dissolves solid fats, especially at 30-40° C. Chemically, olein is a glyceride of oleic acid; and, as three molecules of the acid are united to one molecule…

reventing or checking fermentation in fluids, such as wines, milk, etc., by exposure to a temperature of 140º F., thus destroying the vitality of the contained germs or ferments.

Petroleum spirit, a volatile liquid obtained in the distillation of crude petroleum at a temperature of 170° Fahr., or below. The term is rather loosely applied to a considerable range of products, including benzine and ligroin. The terms petroleum ether, and naphtha, are sometimes applied to the still more volatile p…

phases be considered, the system is univariant, that is, the fixing of one condition, as temperature, determines the others.

active chemically, must be preserved under water, and unites with oxygen even at ordinary temperatures, giving a faint glow, -- whence its name. It always occurs compined, usually in phosphates, as in the mineral apatite, in bones, etc. It is used in the composition on the tips of friction matches, and for many other p…

gars. The chloroplasts perform photosynthesis only in light and within a certain range of temperature, varying according to climate. This is the only way in which a plant is able to organize carbohydrates. All plants without a chlorophyll apparatus, as the fungi, must be parasitic or saprophytic. --Pho`to*syn*thet"ic (…

y spreading it on linen, leather, silk, or other material. It is adhesive at the ordinary temperature of the body, and is used, according to its composition, to produce a medicinal effect, to bind parts together, etc.; as, a porous plaster; sticking plaster.

Having a varying body temperature. See Homoiothermal.

alcohol and water which contains one half of its volume of alcohol, the alcohol when at a temperature of 60º Fahrenheit being of specific gravity 0.7939 referred to water at its maximum density as unity. Proof spirit has at 60º Fahrenheit a specific gravity of 0.93353, 100 parts by volume of the same consisting of 50 p…

also observed in the spectra of some stars), obtained at the highest available laboratory temperatures (Lockyer); as protocalcium, protochromium, protocopper, protonickel, protosilicon, protostrontium, prototitanium, protovanadium. -- Pro`to*me*tal"ic (#), a.

hich is liable to undergo decomposition when in contact with air and moisture at ordinary temperatures.

Producing heat; -- said of substances, as septic poisons, which elevate the temperature of the body and cause fever.

or application of the thermopile, used for indicating minute changes of radiant heat, or temperature.

ium chemically. Radium preparations are remarkable for maintaining themselves at a higher temperature than their surroundings, and for their radiations, which are of three kinds: alpha rays, beta rays, and gamma rays (see these terms). By reason of these rays they ionize gases, affect photographic plates, cause sores o…

vate in degree according to some scale; as, to raise the pitch of the voice; to raise the temperature of a room.

projecting, or to admit of being projected, especially as to horizontal distance; as, the temperature ranged through seventy degrees Fahrenheit; the gun ranges three miles; the shot ranged four miles.

; a register; as, a record of the acts of the Hebrew kings; a record of the variations of temperature during a certain time; a family record.

ar constructed as a refrigerator, for the transportation of fresh meats, fish, etc., in a temperature kept cool by ice.

t, or maintain, with respect to a desired rate, degree, or condition; as, to regulate the temperature of a room, the pressure of steam, the speed of a machine, etc. To regulate a watch or clock, to adjust its rate of running so that it will keep approximately standard time.