单词	perturbation
释义	perturbation noun per·​tur·​ba·​tion ˌpər-tər-ˈbā-shən  ˌpər-ˌtər- 1 : the action of perturbing : the state of being perturbed 2 : a disturbance of motion, course, arrangement, or state of equilibrium especially : a disturbance of the regular and usually elliptical course of motion of a celestial body that is produced by some force additional to that which causes its regular motion perturbational ˌpər-tər-ˈbā-shnəl  -shə-nᵊl ˌpər-ˌtər- adjective Synonyms agita agitation anxiety anxiousness apprehension apprehensiveness care concern concernment disquiet disquietude fear nervosity nervousness solicitude sweat unease uneasiness worry See all Synonyms & Antonyms Example Sentences a perturbation in the planet's orbit in her perturbation she kept calling her son, a freshman, to see if everything was all right at college Recent Examples on the Web Marine ecosystems would be highly disrupted by both the initial perturbation and in the new ocean state, resulting in long-term, global impacts to ecosystem services such as fisheries, write the authors. David Bressan, Forbes, 7 July 2022 Next came Martin Borch Jensen of Gordian Biotechnology with a talk on using pooled in vivo perturbation screens to understand how aging mechanisms manifest across tissues and cell types. Alex Zhavoronkov, Forbes, 29 June 2022 The mechanisms of this polar perturbation are not yet fully understood. Robin Andrews, Wired, 22 Feb. 2022 In Florida, for instance, it could be detected as a perturbation in air pressures shortly after 9 a.m. Washington Post, 15 Jan. 2022 What O’Hara gets so right, regardless of the apparent setting, is the relentless rhythm of placation and perturbation. New York Times, 25 Jan. 2022 One prominent candidate for a brain signature of consciousness is its response to a perturbation. Anil Seth, Wired, 20 Dec. 2021 For capable athletes, imagination is the only factor that limits perturbation training. Washington Post, 6 July 2021 This procedure, known as perturbation theory, gets them correlation functions for most of the fields in the standard model, because nature’s forces happen to be quite feeble. Charlie Wood, Wired, 4 July 2021 See More Word History First Known Use 14th century, in the meaning defined at sense 1 perturbation noun as in anxiety an uneasy state of mind usually over the possibility of an anticipated misfortune or trouble in her perturbation she kept calling her son, a freshman, to see if everything was all right at college Synonyms & Similar Words Relevance anxiety fear concern worry concernment unease uncertainty fearfulness agitation disquietude uneasiness nervousness disquiet apprehensiveness apprehension solicitude anxiousness tension disturbance nervosity discomfort stress agita care panic tremor sweat desperation anguish discomposure distress desperateness dread incertitude strain consternation jumpiness doubt jitters vexation torment dismay upset angst distraction alarm edginess presentiment alarum franticness suspense compunction misgiving foreboding cold feet hand-wringing qualm scruple Antonyms & Near Antonyms quietude unconcern tranquility ease placidity calmness contentment content tranquillity relief serenity peace peacefulness calm easiness tranquilness consolation quiet placidness solace sereneness comfort See More
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