Dictionary.com
definitions

rockoon

[rok-oon, ro-koon]
|

noun

a rocket launched from a balloon at a high altitude.

Nearby words

  1. rockledge,
  2. rocklike,
  3. rockling,
  4. rockne,
  5. rockne, knute kenneth,
  6. rockrose,
  7. rockrose family,
  8. rocks,
  9. rocks in one's head, have,
  10. rockshaft

Origin of rockoon

1950–55; rock(et1) + (ball)oon
Dictionary.com 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

rockoon

noun

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