quadrupole
UK[ˈkwɒdrəpəʊl]US[ˈkwɑːdrəpoʊl]
n
A system or arrangement of four magnetic poles or electric charges, especially two positive and two negative arranged alternately.
n
(Physics) A type of electromagnetic field configuration or a moment characterizing such a system.
Morpheme Breakdown
quadru
pole
quadru
four
pole
end, axis
Etymology
The term is a modern scientific compound, directly assembled from classical elements to describe a precise physical concept. The first element, "quadru-," traces back to the Proto-Indo-European root kʷetwer-, the source of words for "four" across many languages, including Latin quattuor. The second element, "pole," originates from Greek polos, meaning a pivot or axis, which entered English via Latin. Literally meaning "four ends or axes," the word logically names a system characterized by four distinct poles, effectively bridging its literal compositional meaning to its specialized abstract use in physics and engineering.
Analysis
Structure: quadru (four) + pole (end, axis)
- quadru: From Latin quadru-, a combining form of quattuor (four). Denotes quantity.
- pole: From Latin polus, meaning "end of an axis," from Greek polos (pivot, axis, sky). Denotes a point or extremity.
Examples
The physicist explained how a quadrupole magnet focuses particle beams.
The molecule's charge distribution was analyzed using quadrupole resonance.
The antenna design utilized a quadrupole arrangement to shape the radiation pattern.