Adjective
Almost periodic; recurring at irregular intervals.
(mathematics, of a function) Such that an increment of a variable leads to a multiplication by some function.
(physics, of an oscillation) Having two unrelated periods.
Source: en.wiktionary.orgKAM Theory The methods introduced by Kolmogorov, Arnold, and Moser have developed into a large body of results related to quasiperiodic motions, now known as KAM theory. Source: Internet
The concept of an almost periodic function (also called a quasiperiodic function) was studied by Bohr, including work of Bohl and Escanglon. citation He introduced the notion of a superspace. Source: Internet
Plotting the coordinates of an integrable system would show that they are quasiperiodic. Source: Internet
They are periodic along this axis and quasiperiodic in planes normal to it. Source: Internet