browse words by letter
a b c d e f g h i j k l m n o p q r s t u v w x y z

perturbationmore about perturbation


  2  definitions  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Perturbation  \Per`tur*ba"tion\,  n.  [L.  perturbatio:  cf  F. 
  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  other  --Newcomb. 
  From  WordNet  r  1.6  [wn]: 
  n  1:  an  unhappy  and  worried  mental  state;  "there  was  too  much 
  anger  and  disturbance";  "she  didn't  realize  the  upset 
  she  caused  me"  [syn:  {disturbance},  {upset}] 
  2:  activity  that  is  an  intrusion  or  interruption;  "he  looked 
  around  for  the  source  of  the  disturbance";  "there  was  a 
  disturbance  of  neural  function"  [syn:  {disturbance}] 
  3:  a  disposition  that  is  confused  or  nervous  and  upset  [syn:  {fluster}] 
  4:  the  act  of  causing  disorder  [syn:  {disruption}] 

more about perturbation