In math: Two divided by nothing.
In physics: The contraction of
the mouth due to the expansion
of the heart.
In accounting: It’s a credit, because it is profitable when returned.
In economics: A thing for which the demand is higher than the
In dentistry: It’s infectious and
Order your copy from the publisher's web site. A guide on how to order online can be found here. To request for an inspection copy, please follow the instructions on this page.