| inversion | |
| 1. n. The action of inverting. | |
| 2. n. Being upside down, in an inverted state. | |
| 3. n. Being in a reverse sequence, in an inverted state. | |
| 4. n. music | |
| 5. n. The move of one pitch in an interval up or down an octave. | |
| 6. n. The reversal of an interval. | |
| 7. n. The reversal of the pitch contour. | |
| 8. n. The reversal of a pitch class succession, such as a contrapuntal line or melody. | |
| 9. n. The subtraction of pitch classes in a set from twelve, which maps intervals onto their complements with respect to 0, and preserves interval classes, s | |
| 10. n. (genetics) a segment of DNA in the context of a chromosome that is reversed in orientation relative to a reference karyotype or genome | |
| 11. n. (meteorology) 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 ar | |
| 12. n. (grammar) Deviation from standard word order by putting the predicate before the subject. It takes place in questions with auxiliary verbs and in normal, affirmative clauses beginning with a negative | |
| (with an auxiliary verb) Inversion takes place in the sentence 'Is she here?' — 'is', the predicate, is before 'she', the subject. | |
| (for the purpose of emphasis) Inversion takes place in the sentence 'Never have I done that.' — 'have', the predicate, is before 'I', the subject, due to 'never' being the first word of t | |
| 13. n. (algebra) An operation on a group, analogous to negation. | |
| 14. n. (psychology, obsolete) Homosexuality, particularly in early psychoanalysis. | |
