See Also: equation(dictionary)
equation(encyclopedia)
Equation(medicine)
equation(dictionary)
van't Hoff's equation(medicine)
Richardson's equation(dictionary)
Regression equation(finance)
Fisher equation(finance)
Alpha equation(finance)
Regression equation(money)

equation (iou)



equation noun. LME.
[Old & mod. French equation or Latin aequatio(n-), formed as EQUATE: see -ATION.]
The action of making equal or equating; the state of being equal or in equilibrium; a balance. LME.
J. W. Krutch Our characteristic equation of 'going to school' with 'getting an education'. A. F. Douglas-Home To establish an equation which would combine full employment with a steady level of prices.
b. Astrology. Equal partition, esp. of the heavens into twelve houses. Only in LME.
Math. The action of stating the identity in value of two quantities or expressions. L16-L17.
A mathematical formula affirming the equivalence of two symbolic or numerical expressions (indicated by the sign =); fig. (the relationship between) the factors to be taken into account when considering a matter. L16.
Laplace's equation, Planck's equation, Schr?dinger equation, etc. equation of state Science: showing the relationship between the values of the pressure, volume, and temperature of a substance at any one time.
S. Themerson There are some exceptions to the equation 1 + 1 = 2. Which? There have been some changes to that equation which may tip the balance in favour of diesel.
b. Chemistry. A formula indicating a reaction by means of the symbols for the elements or compounds involved in it. E19.
Astronomy. A numerical quantity added to or subtracted from an observed or calculated one to compensate for an irregularity or error; the action or an act of making such an adjustment. M17.
equation of time the difference between mean solar time (as shown by clocks) and apparent solar time (indicated by sundials), which varies with the time of year. human equation = personal equation (b) below. personal equation (a) Astronomy an individual's time of reaction or habitual inaccuracy in making observations; a correction or allowance made for this; (b) personal prejudice or bias.