Is it farther or further?
1580s, "action of distorting," from Latin distortionem (nominative distortio), noun of action from past participle stem of distorquere (see distort). Figurative use (of words, etc.) from 1640s.
distortion dis·tor·tion (dĭ-stôr'shən)n.
A twisting out of normal shape or form.
A psychological defense mechanism that helps to repress or disguise unacceptable thoughts.