dipole
nounA dipole is a thing with two opposite ends, like a magnet with a north and a south side.
A bar magnet is a simple dipole because it has a north pole at one end and a south pole at the other.
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OTHER MEANINGS
2. A pair of equal and opposite electric charges or magnetic poles separated by a small distance.
Water molecules act as electric dipoles, which helps them stick together.
3. An antenna made of two straight rods that sends or receives radio waves.
The old television had a dipole antenna on its roof.
4. A molecule that has a positive end and a negative end.
Because it is a dipole, the molecule lines up in an electric field.
5. A pair of opposite forces or tendencies acting together.
The two rival teams formed a kind of dipole in the league, always pulling against each other.