early 15c., "bring into organized form," from Latin redactus, past participle of redigere "to drive back, force back; bring back; collect, call in; bring down, reduce," from re- "back, again" (see re-) + agere "to set in motion, drive, do, perform" (from PIE root *ag- "to drive, draw out or forth, move"). Specific meaning "arrange, edit" is from 1851.
red cross
red herring
red ink
Red Sea
red tape
redact
redaction
redbird
red-blooded
redbreast
redcap