Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
the value of something based on a calculation that you make when you do not have exact information, and have to use information about similar things or situations instead
Share your knowledge with the community
Browse our collection of 300,000+ community-written definitions
