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Noun, pl. inversions


1. The action of inverting. (

2. Being upside down, in an inverted state. (

3. Being in a reverse sequence, in an inverted state. (

4. (Kinesiology) Movement of the sole towards the median plane.

5. (Genetics) a segment of DNA in the context of a chromosome that is reversed in orientation relative to a reference karyotype or genome. (

6. (Weather) An increase of air temperature with increase in altitude (the ground being colder than the surrounding air). When an inversion exists, there are no convection currents and wind speeds are below 5 knots. The atmosphere is stable and normally is considered the most favorable state for ground release of chemical agents. (

7. (Chemistry) Conversion of a substance in which the direction of optical rotation is reversed, from the dextrorotatory to the levorotatory or from the levorotatory to the dextrorotatory form. (

Word origin: From Latin inversionem (nominative inversio) “an inversion,” noun of action from past participle stem of invertere

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