- an instrument for measuring mechanically the area of plane figures.
Origin of planimeter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for planimeter
If he has no planimeter, a delicate balance will serve just as well.Inventors at Work
The simple finding of areas we may omit, as the planimeter will do that equally well.
If the error of its reading be not sensibly greater than that of a planimeter, it is certainly worth double the money.
Amsler's planimeter was taken as the standard, the area measured by it being independently checked by an assistant.
The planimeter affords a much quicker and more accurate method of obtaining the average steam pressure from a diagram.
- a mechanical integrating instrument for measuring the area of an irregular plane figure, such as the area under a curve, by moving a point attached to an arm around the perimeter of the figure
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012