Definition of RATO in English:

RATO

(also R.A.T.O., Rato, rato)

noun

Aeronautics
  • A system for assisting the take-off of an aircraft or missile in which a (usually detachable) unit of rocket engines is used temporarily to provide additional thrust. Frequently attributive, especially in "RATO unit".

Origin

1940s; earliest use found in Joplin (Missouri) Globe. Acronym from the initial letters of rocket-assisted take- off from rocket + assisted + take-off.

Pronunciation

RATO

/ˈreɪtəʊ/