|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
|1.||the act of inverting or state of being inverted|
|2.||something inverted, esp a reversal of order, mutual functions, etc: an inversion of their previous relationship|
|3.||rhetoric Also called: anastrophe the reversal of a normal order of words|
|a. the conversion of a dextrorotatory solution of sucrose into a laevorotatory solution of glucose and fructose by hydrolysis|
|b. any similar reaction in which the optical properties of the reactants are opposite to those of the products|
|a. See also root position the process or result of transposing the notes of a chord (esp a triad) such that the root, originally in the bass, is placed in an upper part. When the bass note is the third of the triad, the resulting chord is the first inversion; when it is the fifth, the resulting chord is the second inversion|
|b. (in counterpoint) the modification of a melody or part in which all ascending intervals are replaced by corresponding descending intervals and vice versa|
|c. See complement the modification of an interval in which the higher note becomes the lower or the lower one the higher|
|6.||pathol abnormal positioning of an organ or part, as in being upside down or turned inside out|
|a. the adoption of the role or characteristics of the opposite sex|
|b. another word for homosexuality|
|8.||meteorol an abnormal condition in which the layer of air next to the earth's surface is cooler than an overlying layer|
|9.||anatomy, phonetics another word for retroflexion|
|10.||computing an operation by which each digit of a binary number is changed to the alternative digit, as 10110 to 01001|
|11.||genetics a type of chromosomal mutation in which a section of a chromosome, and hence the order of its genes, is reversed|
|12.||logic the process of deriving the inverse of a categorial proposition|
|13.||maths a transformation that takes a point P to a point P′ such that OP·OP′ = a², where a is a constant and P and P′ lie on a straight line through a fixed point O and on the same side of it|
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.
|inversion (ĭn-vûr'zhən) Pronunciation Key
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.