fixed oil

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Related to fixed oil: volatile oil


1. an unctuous, combustible substance that is liquid, or easily liquefiable, on warming, and is not miscible with water, but is soluble in ether. Such substances, depending on their origin, are classified as animal, mineral, or vegetable oils. Depending on their behavior on heating, they are classified as volatile or fixed. For specific oils, see under the name, as castor oil.
2. a fat that is liquid at room temperature.
essential oil volatile o.
expressed oil (fatty oil) (fixed oil) one that is not volatile, i.e., does not evaporate on warming; such oils consist of a mixture of fatty acids and their esters, and are classified as solid, semisolid, and liquid, or as drying, semidrying, and nondrying as a function of their tendency to solidify on exposure to air.
volatile oil an oil that evaporates readily; such oils occur in aromatic plants, to which they give odor and other characteristics.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

fat·ty oil

an oil derived from both animals and plants; chemically, a glyceride of a fatty acid that, by substitution of the glycerine by an alkaline base, is converted into a soap; a fatty oil, in contrast to a volatile oil, is permanent, leaving a stain on an absorbent surface, and thus is not capable of distillation; it is obtained by expression or extraction; the consistency varies with the temperature, some being liquid (o.'s proper), others semisolid (fats), and others solid (tallows) at ordinary temperatures; both liquid and semisolid oils are congealed by cold and the solids are liquified by heat.
Synonym(s): fixed oil
Farlex Partner Medical Dictionary © Farlex 2012

fixed oil

Herbal medicine
A general term for a type of essential oil produced by plants that does not volatilise (i.e., is not aromatic).
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
References in periodicals archive ?
Both fixed oil and TQ inhibited cyclooxygenase (COX) and 5-lipoxygenase (5-LOX) pathways in rat stimulated peritoneal leukocytes, significantly reducing synthesis of thromboxane B2 and leukotriene B4, respectively.
sativa seed fixed oil was received as gift sample from Manish Herbals, Mandsaur, Madhya Pradesh.
Bekir et al., "Chemical composition, antibacterial and antifungal properties of Tunisian Nigella sativa fixed oil," African Journal of Microbiology Research, vol.
Key words: Nelumbo nucifera, Fixed Oil, GC-MS analysis, Antimicrobial and antileishmanial activities, Jack Bean (J.B.) urease and Bacillus Pasteurii (B.P.) Urease inhibition.
A TEESSIDE company's work on dismantling the largest fixed oil platform ever to be removed from the North Sea has been under the spotlight from members of a leading industry safety forum.
Lake said that oil and gas companies were using larger FPSOs more, instead of fixed oil platforms, as they developed wells in politically sensitive areas such as west Africa.
The company has just completed the design of an access gangway from a vessel to a fixed oil platform for the Sakhalin Energy Investment Company, Sakhalin Island, Russia.
She combines production, storage and offloading facilities and is particularly useful for getting oil in very deep water where it would be difficult to position a fixed oil platform.
Rather than depend on fixed oil change schedules that may not be suitable for all situations, the monitoring system customizes oil change schedules based on the vehicle's engine and transmission type, as well as on an individual's driving habits.
The seeds are rather oily--50% to 60%--and yield a bland, pale yellow fixed oil.