improper fraction a fraction whose numerator is larger than the denominator
proper fraction a fraction with a numerator smaller than the denominator
imperfection the state or an instance of being flawed
appropriation a deliberate act of acquisition, often without permission
improvisation a performance given without planning or preparation
simple fraction the quotient of two integers
imprecation the act of calling down a curse that invokes evil
improperness an improper demeanor
compound fraction a fraction with fractions in the numerator or denominator
complex fraction a fraction with fractions in the numerator or denominator
imperforate anus a congenital defect of the anus
impervious not admitting of passage or capable of being affected
appropriate suitable for a particular person, place, or situation
double refraction splitting a ray into two parallel rays polarized perpendicularly
impossible action an alternative that is not available
proportion relation with respect to comparative quantity or magnitude
refraction the change in direction of a propagating wave
angle of refraction the angle between a refracted ray and a line perpendicular to the surface between the two media at the point of refraction
prevarication the deliberate act of deviating from the truth
expropriation taking out of an owner's hands