inversion

noun Date: 1586 1. a reversal of position, order, form, or relationship: as a. (1) a change in normal word order; especially the placement of a verb before its subject (2) the process or result of changing or reversing the relative positions of the notes of a musical interval, chord, or phrase b. the condition of being turned inward or inside out c. a breaking off of a chromosome section and its subsequent reattachment in inverted position; also a chromosomal section that has undergone this process 2. the act or process of inverting 3. a. a change in the order of the terms of a mathematical proportion effected by inverting each ratio b. the operation of forming the inverse of a magnitude, a function, an operation, or an element 4. a. the conversion of dextrorotatory sucrose into a levorotatory mixture of glucose and fructose b. a change from one stereochemical figuration at a chiral center in a usually organic molecule to the opposite configuration that is brought about by a reaction in which a substitution of one group is made for a different group 5. homosexuality 6. an increase of temperature with height through a layer of air