plural of retro

Back or backward. / Behind. / In the opposite direction. / Pertaining to an earlier time. / (informal) Old-fashioned or old school.

Of, or relating to, the past, past times, or the way things were. / Affecting things past; retroactive, ex post facto.

(uncountable) Past fashions or trends. / (countable) Abbreviation of retrorocket. / (countable) Abbreviation of retrospective.

plural of retro

An optimistic version of the future (featuring flying cars, robot servants, etc.) popular from approximately the 1920s to the 1960s.

Running backwards as a form of exercise or physical therapy.

Alternative spelling of retrofitted

Pertaining to a modern "retro" interpretation of the US colonial era.

In a retro-orbital direction.