| fluctuation | 1. A motion like that of waves; a moving in this and that direction; as, the fluctuations of the sea. 2. A wavering; unsteadiness; as, fluctuations of opinion; fluctuations of prices. 3. <medicine> The motion or undulation of a fluid collected in a natural or artifical cavity, which is felt when it is subjected to pressure or percussion. Origin: L. Fluctuatio; cf. F. Fluctuation. Source: Websters Dictionary (01 Mar 1998) |
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| fluctuation analysis | Method used to determine (for example) how many ion channels contribute to the transmembrane current. On the assumption that each channel is either open or shut, the noise in the recorded current can be considered to arise from the statistical fluctuation in the number of channels open and the magnitude of the fluctuation gives an estimate of the conductance of a single channel. (18 Nov 1997) |
| fluctuation test | <investigation> Test devised by Luria and Delbruck to determine whether genetic variation in a bacterial population arises spontaneously or adaptively. In the original version the statistical variance in the number of bacteriophage resistant cells in separate cultures of bacteriophage sensitive cells was compared with variance in replicate samples from bulk culture. The greater variance in the isolated populations indicates that mutation occurs spontaneously before challenge with phage. (The proportion of resistant cells depends upon when after isolation the mutation arises which will be very different in separate populations). (18 Nov 1997) |
| fluctuation |
a wave motion; "the fluctuations of the sea" variation: an instance of change; the rate or magnitude of change the quality of being unsteady and subject to changes; "he kept a record of price fluctuations"
Ãâó: wordnet.princeton.edu/perl/webwn
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| fluctuation |
Variation, especially back and forth between successive values in a series of observations; or, variations of data points about a smooth curve passing among them.
Ãâó: amsglossary.allenpress.com/glossary/browse
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| fluctuation |
Variations in the value of a variable, usually around the variable's locally averaged value.
Ãâó: www.esse.ou.edu/glossary_st.html
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| fluctuation |
The changes, either up or down, in the prices and yields (where applicable) of stocks, bonds, mutual funds, and other investments.
Ãâó: www.state.il.us/treas/Education/Glossary.htm
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| fluctuation |
of the market ( h iwaalat al-aswaaq). The acquisition and accumulation of real property, says Ibn Khaldun, is a gradual process. It may come about through inheritance or through the fluctuation in the real estates market. Fluctuation of the market, when concerning commerce, is not a decent way for satisfying needs and necessities, and specially not when commerce is exercised by those holding power. ...
Ãâó: home.hio.no/~araki/arabase/ibn/kterm000.html
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| fluctuation | the quality of being unsteady and subject to fluctuations |
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| fluctuation | an instance of change |
| fluctuation | a wave motion |
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