per|tur|ba|tion

per|tur|ba|tion
per|tur|ba|tion «PUR tuhr BAY shuhn», noun.
1. the act or fact of perturbing.
2. a perturbed condition: »

Though the violence of her perturbations gradually subsided, her cheerfulness did not return (Lytton Strachey).

3. a thing, act, or event that causes disturbance or agitation: »

The crown…O polish'd perturbation! golden care! (Shakespeare).

4. Astronomy. a disturbance in the motion of a planet or other heavenly body in orbit caused by the attraction of a body or bodies other than its primary: »

Perturbations, or disturbances in the motions, of the planets Neptune and Uranus first led…astronomers to hunt for a distant planet beyond Neptune (Science News Letter).


Useful english dictionary. 2012.

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Look at other dictionaries:

  • per|tur|ba|tion|al — «PUR tuhr BAY shuh nuhl», adjective. = perturbative. (Cf. ↑perturbative) …   Useful english dictionary

  • per·tur·ba·tion — /ˌpɚtɚˈbeıʃən/ noun, pl tions 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 …   Useful english dictionary

  • per — per·acetic; per·acid; per·act; per·acute; per·alkaline; per·aluminous; per·am·bu·lant; per·am·bu·late; per·am·bu·la·tion; per·am·bu·la·tor; per·am·bu·la·to·ry; per·a·na·kan; per·bend; per·borate; per·bromide; Per·bu·nan; per·ca; per·cale;… …   English syllables

  • tion — ab·bre·vi·a·tion; ab·di·ca·tion; ab·duc·tion; ab·er·ra·tion; ab·er·ra·tion·al; ab·jec·tion; ab·junc·tion; ab·ju·ra·tion; ab·lac·ta·tion; ab·la·tion; ab·lu·tion; ab·mi·gra·tion; ab·ne·ga·tion; ab·o·li·tion; ab·o·li·tion·ary; ab·o·li·tion·dom;… …   English syllables

  • tur — ac·cul·tur·ate; ac·cul·tur·a·tion; ac·cul·tur·a·tion·al; ac·cul·tur·a·tion·ist; ac·cul·tur·a·tive; ac·cul·tur·ize; ad·mit·ta·tur; ad·ven·tur·er; ad·ven·tur·ess; ad·ven·tur·ism; ad·ven·tur·ist; ad·ven·tur·ous; ad·ven·tur·ous·ly;… …   English syllables

  • perturbation — per·tur·ba·tion …   English syllables

  • perturbational — per·tur·ba·tion·al …   English syllables

  • perturbation — per•tur•ba•tion [[t]ˌpɜr tərˈbeɪ ʃən[/t]] n. 1) the act of perturbing 2) the state of being perturbed 3) astron. deviation of a celestial body from a regular orbit about its primary, caused by the presence of one or more other bodies that act… …   From formal English to slang

  • perturbed — per|turbed [ pər tɜrbd ] adjective worried or upset by something: William looked a little perturbed at the suggestion. No one seemed unduly perturbed about it. ╾ per|turb verb transitive ╾ per|tur|ba|tion [ ,pɜrtə beıʃn ] noun count or uncount …   Usage of the words and phrases in modern English

  • perturbation — per|tur|ba|tion [ˌpə:təˈbeıʃən US ˌpə:rtər ] n 1.) [U and C] technical a small change in the movement, quality, or behaviour of something ▪ climatic perturbations 2.) [U] formal worry about something that has happened or will happen …   Dictionary of contemporary English

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