4. (Gram.)

Defn: To change the natural order of, as words.

5. (Mus.)

Defn: To change the key of.

TRANSPOSER
Trans*pos"er, n.

Defn: One who transposes.

TRANSPOSITION Trans`po*si"tion, n. Etym: [F. transposition, from L. transponere, transpositum, to set over, remove, transfer; trans across, over + ponere to place. See Position.]

Defn: The act of transposing, or the state of being transposed.
Specifically: —(a) (Alg.)

Defn: The bringing of any term of an equation from one side over to the other without destroying the equation. (b) (Gram.) A change of the natural order of words in a sentence; as, the Latin and Greek languages admit transposition, without inconvenience, to a much greater extent than the English. (c) (Mus.) A change of a composition into another key.

TRANSPOSITIONAL
Trans`po*si"tion*al, a.