Dictionary » P » Polar

Polar

Definition

adjective

(general) Of, or having one or more poles (in a spherical body); being in opposite extremes.

(chemistry) Pertaining to a compound exhibiting polarity or dipole moment, that is a compound bearing a partial positive charge on one side and a partial negative charge on the other.

(mathematics) Of a coordinate system, specifying the location of a point in a plane by using a radius and an angle.

(pathology) Characterized by having opposite ends of a spectrum of symptoms or manifestations, as in polar types of leprosy


Supplement

Sugar, such as sucrose, is an example of polar molecule. Its structure has oxygen-hydrogen (-OH) groups.

Water is also a polar molecule for having both negative and positive poles.


Word origin: from Late Latin polāris.

Related forms: polarity (noun).
Related terms:

Compare: nonpolar.
See also: polar solvents.


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Results from our forum


Main Factors that Affect Clinical Consequence of Toxicity

... important factors that affect toxicosis. The chemical nature of a toxicant determines solubility, which in turn influences absorption, because nonpolar or lipid-soluble substances tend to be more readily absorbed than polar or ionized substances. The vehicle or carrier of the toxic compound also ...

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by 2444256703
Thu Jan 29, 2015 7:30 am
 
Forum: Molecular Biology
Topic: Main Factors that Affect Clinical Consequence of Toxicity
Replies: 0
Views: 250

Aquatic life in the polar regions

https://www.youtube.com/results?search_query=polar+beneath+ice try some of these videos

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by JackBean
Sun Sep 14, 2014 11:58 am
 
Forum: Ecology
Topic: Aquatic life in the polar regions
Replies: 3
Views: 1648

Aquatic life in the polar regions

During winter in polar regions there is a thick sheet of ice above the water bodies. How the water below ice get oxygenated to sustain aquatic life.

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by josem
Sun Aug 24, 2014 8:29 pm
 
Forum: Ecology
Topic: Aquatic life in the polar regions
Replies: 3
Views: 1648

Re: Are predators always smarter than their prey?

... matter of which is more intelligent, the knowledge each have is learned by experience and some prey and predator coevolve such as Ringed Seals and Polar Bears. Also, usually when the predator(s) hunt it seeks out the weakest or slowest: young, old, sick .

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by Gannet
Sat Feb 22, 2014 2:46 pm
 
Forum: Zoology Discussion
Topic: Are predators always smarter than their prey?
Replies: 15
Views: 15738

Are carbohydrates hydrophobic?

Yeah, right, oxygen O2 contains 100% oxygen, is it polar? Carbon dioxide contains also high percentage of oxygen (66% by moles, 72% by weight), is it polar?

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by JackBean
Fri Aug 30, 2013 8:17 am
 
Forum: Molecular Biology
Topic: Are carbohydrates hydrophobic?
Replies: 7
Views: 20711
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