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polar

polar

10 6.4
Having a positive end and a negative end because charges are not even
  • adjective
  • /ˈpoʊlər/
  • Specialized
translation icon : polar
  • Properties of water: chemical and physical (molecular structure, polar molecules, solubility, pH, ionization, reaction to other chemicals).
  • polar molecules
  • polar head groups

Because it is polar and so it's not going to create a solution with oils like capsaicin.

Examples

  • A phospholipid has a polar electrically charged head which attracts water and a non polar tail which repels it.

  • Another molecule that also has polar bonds is water.

  • You might also hear people use the terms polar versus non polar.

  • Because it is polar and so it's not going to create a solution with oils like capsaicin.

  • Interactive exhibits and dramatic displays help explain the science behind changes in polar ice and oceans.

    Academic text (2011)
  • Water is a polar molecule because it has a positive charge on one side and a negative charge on the other.

  • In chemistry, a polar bond is formed when there is an unequal sharing of electrons between atoms.

  • The polar properties of certain molecules influence their ability to dissolve in water.

Synonyms

polaric
vspolar
  • Specialized
4 8.7

Having two opposite ends, like positive and negative, often in chemistry

describes the actual molecular condition of having equal opposite electric charges
dipolar
vspolar
  • Specialized
7.9

Having two opposite electric charges or magnetic poles close together

is the same concept but used in more general chemical descriptions
polarized
vspolar
  • Specialized
6.5

Having one side positive and the other negative in electric charge

refers to equal and opposite charges forming a dipole, not general uneven charge

Antonyms

nonpolar
  • Specialized
6.7

A substance like oil or gas that has no charged areas and does not mix with water

Compounds

37 1.1

A large white bear that lives in the Arctic and hunts seals on sea ice

7 3.2

An area around the North or South Pole that is very cold and icy

polar coordinate
  • Specialized
1 7.5

One of the two numbers that show a point's distance from a fixed center and its angle

1 6.5

Relating to the area around the North Pole, the Arctic

1 4.6

A bright star called Polaris that sits almost above Earth's north pole and shows true north

1 7.3

Near the South Pole on Earth

polar front
  • Specialized
6.7

A line where very cold air from the poles meets warmer air and causes storms

A large mass of ice that forms near the North or South Pole

7.3

A large Arctic animal like a rabbit that turns white in winter

A clear contrast between two very different ends that shows points between them

polar body
  • Specialized
9.9

A very small cell with little liquid that forms when an egg divides and that the body usually discards

A circle near Earth's poles where the sun stays above or below the horizon for one day

An extremely cold area around the North or South Pole with ice and snow

How Polar

ionic
  • Specialized
8 5.0
polar
  • Specialized
10 6.4
nonpolar
  • Specialized
6.7

Surface Forms

polar positive

Morphology

polar = pole (semi-transparent) = pole + ar

The scientific sense extends 'pole' to opposite electric charges; this metaphorical technical usage may not be obvious to a general B1 learner.

Etymology

Polar comes from an old word for pole 'end' or 'point', like the North and South poles. In chemistry a polar molecule has two 'poles' with opposite electric charges, so one end is slightly positive and the other slightly negative.