Definify.com
Webster 1913 Edition
Perturbation
Perˊtur-ba′tion
,Noun.
[L.
perturbatio
: cf. F. perturbation
.] 1.
The act of perturbing, or the state of being perturbed; esp., agitation of mind.
2.
(Astron.)
A disturbance in the regular elliptic or other motion of a heavenly body, produced by some force additional to that which causes its regular motion;
as, the
. perturbations
of the planets are caused by their attraction on each otherNewcomb.
Webster 1828 Edition
Perturbation
PERTURBA'TION
,Noun.
1.
Disquiet or agitation of mind.2.
Restlessness of passions; great uneasiness.3.
Disturbance; disorder; commotion in public affairs.4.
Disturbance of passions; commotion of spirit.5.
Cause of disquiet. O polished perturbation, golden care!