perturbation
1 ENTRIES FOUND:
plural
perturbations
plural
perturbations
Britannica Dictionary definition of PERTURBATION
1
technical
:
a change in the normal state or regular movement of something
[count]
-
a perturbation in the planet's orbit
[noncount]
-
gravitational perturbation
2
[noncount]
formal
:
the state of being worried or upset
-
mental/emotional perturbation
