monopole; singular pole; unipole
Technical term used in physics and related fields to refer to a hypothetical particle with only one magnetic pole, or more generally a single pole in a system.
It is difficult to isolate just one pole of a magnet.
This model assumes a singular pole charge.
overconcentration; excessive concentration in one place
Compound of 一 (one) and 極 (pole). The exact historical derivation is uncertain; the term is used in modern technical contexts.