inversion in·ver·sion (ĭn-vûr'zhən, -shən)
The act of inverting or the state of being inverted.
Conversion of a substance in which the direction of optical rotation is reversed.
The taking on of the gender role of the opposite sex.
Homosexuality. Used in psychology.
A chromosomal defect in which a segment of the chromosome breaks off and reattaches in the reverse direction.
A departure from the normal effect of altitude on a meteorological property, especially an atmospheric condition in which the air temperature rises with increasing altitude. ◇ A layer of air that is warmer than the air below it is called an inversion layer. Such a layer traps the surface air in place and prevents dispersion of any pollutants it contains.