Defn: A change in the order of the terms of a proportion, so that the second takes the place of the first, and the fourth of the third.
5. (Geom.)
Defn: A peculiar method of transformation, in which a figure is replaced by its inverse figure. Propositions that are true for the original figure thus furnish new propositions that are true in the inverse figure. See Inverse figures, under Inverse.
6. (Gram.)
Defn: A change of the usual order of words or phrases; as, "of all vices, impurity is one of the most detestable," instead of, "impurity is one of the most detestable of all vices."
7. (Rhet.)
Defn: A method of reasoning in which the orator shows that arguments advanced by his adversary in opposition to him are really favorable to his cause.
8. (Mus.) (a) Said of intervals, when the lower tone is placed an octave higher, so that fifths become fourths, thirds sixths, etc. (b) Said of a chord, when one of its notes, other than its root, is made the bass. (c) Said of a subject, or phrase, when the intervals of which it consists are repeated in the contrary direction, rising instead of falling, or vice versa. (d) Said of double counterpoint, when an upper and a lower part change places.
9. (Geol.)
Defn: The folding back of strata upon themselves, as by upheaval, in such a manner that the order of succession appears to be reversed.