• synonyms


[ rok-oon, ro-koon ]
/ ˈrɒk un, rɒˈkun /


a rocket launched from a balloon at a high altitude.

Nearby words

rockledge, rocklike, rockling, rockne, rockne, knute kenneth, rockoon, rockrose, rockrose family, rocks, rocks in one's head, have, rockshaft

Origin of rockoon

1950–55; rock(et1) + (ball)oon Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for rockoon

  • I also understand that a rockoon is a combination of a rocket and a balloon.

    The Flying Stingaree|Harold Leland Goodwin

British Dictionary definitions for rockoon


/ (rɒˈkuːn) /


a rocket carrying scientific equipment for studying the upper atmosphere, fired from a balloon at high altitude

Word Origin for rockoon

C20: from rocket 1 + balloon
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012