"apply massage to, treat by means of massage," 1874, from massage (n.). Figurative sense of "manipulate" (data, etc.) is by 1966. Related: Massaged; massaging.
1960, in computing, "sequence of one or more characters used to specify the beginning or end of separate, independent regions in text or other data streams," agent noun from delimit.
"person or machine which performs a process," 1909, agent noun in Latin form from process (v.). Data processor is from 1957; word processor is from 1973; food processor in the kitchen appliance sense also is from 1973.
"make an approximate calculation by inferring unknown values from trends in the known data," 1862 (in a Harvard observatory account of the comet of 1858), from extra- + ending from interpolate. Said in early references to be a characteristic word of Sir George Airy (1801-1892), English mathematician and astronomer. Related: Extrapolated; extrapolating.