Dictionary

fluctuation en · NOUN

Pronunciation

• /flʌkt͡ʃuːˈeɪʃən/
• (US) audio

Etymology

Borrowed from Latin fluctuatiōnem, accusative singular of fluctuatiō, from fluctuō, from fluctus. Morphologically fluctuate + -ion.

Meanings

1. (countable, uncountable) A motion like that of waves; a moving in this and that direction; an irregular rising and falling.
   • the fluctuations of the sea
   • The scientific instruments of the day recorded rapid fluctuations in the Earth's magnetic field, as powerful electrical currents flowed through the upper atmosphere. 2023 November 15, Prof. Jim Wild, “This train was delayed because of bad weather in space”, in RAIL, number 996, page 30:
   • The rolling stock has been specially designed to meet the needs of the fluctuation of traffic in peak and off-peak periods. 1959 November 14, “Notes and News: St. Pancras-Bedford Diesel Trains”, in Railway Magazine, page 801:
2. (countable, uncountable) A wavering; unsteadiness.
   • fluctuations of prices
   • fluctuations of opinion
3. (countable, uncountable) In medicine, a wave-like motion or undulation of a fluid in a natural or abnormal cavity (e.g. pus in an abscess), which is felt during palpation or percussion.

Forms

Deriveds

cofluctuation · refluctuation · quantum fluctuation · fluctuational · microfluctuation · fluctuation theorem

Relateds

fluctuate

Translations (52)

da fluktuation (wavering; unsteadiness) · pt flutuação (wavelike motion) · ar تَذَبذُب (wavering; unsteadiness) · de Schwankung (wavelike motion) · de Schwankung (wavering; unsteadiness) · ru колеба́ние (wavering; unsteadiness) · es fluctuación (wavelike motion) · fi huojunta (wavelike motion) · fi heilahtelu (wavelike motion) · pt ondulação (wavelike motion) · cs fluktuace (wavering; unsteadiness) · fr fluctuation (wavering; unsteadiness) · uk колива́ння (wavelike motion) · ja 波動 (wavelike motion) · fr fluctuation (wavelike motion) · de Fluktuation (wavering; unsteadiness) · hu fluktuáció (wavering; unsteadiness) · pl fluktuacja (wavering; unsteadiness) · ga luaineacht (wavering; unsteadiness) · hu ingadozás (wavering; unsteadiness) · hu fluktuálás (wavering; unsteadiness) · eo fluktuado (wavelike motion) · ar تَقَلُّب (wavering; unsteadiness) · hu hullámzás (wavelike motion) · nl schommeling (wavering; unsteadiness) · ru неусто́йчивость (wavering; unsteadiness) · ja ばらつき (wavering; unsteadiness) · ar تَقَلُّب (wavelike motion) · ca fluctuació (wavelike motion) · ja 増減 (wavering; unsteadiness) · tr dalgalanma (wavering; unsteadiness) · uk колива́ння (wavering; unsteadiness) · ja 変動 (wavering; unsteadiness) · fi heilahtelu (wavering; unsteadiness) · pl falowanie (wavelike motion) · eo fluktuado (wavering; unsteadiness) · bg колебание (wavering; unsteadiness) · ar تَأْرْجُح (wavelike motion) · pt flutuação (wavering; unsteadiness) · hu hullámzás (wavering; unsteadiness) · ru колеба́ние (wavelike motion) · bg флуктуация (wavering; unsteadiness) · pl wahanie (wavelike motion) · ca fluctuació (wavering; unsteadiness) · fi vaihtelu (wavering; unsteadiness) · uk флукту́ація (wavelike motion) · pl wahanie (wavering; unsteadiness) · es fluctuación (wavering; unsteadiness) · fi huojunta (wavering; unsteadiness) · cmn 變動 /变动 (wavering; unsteadiness) · uk флукту́ація (wavering; unsteadiness) · cmn 波動 /波动 (wavelike motion)