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rockoon

[rok-oon, ro-koon]
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noun
  1. a rocket launched from a balloon at a high altitude.
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Origin of rockoon

1950–55; rock(et1) + (ball)oon
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for rockoon

Historical Examples

  • 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
  1. a rocket carrying scientific equipment for studying the upper atmosphere, fired from a balloon at high altitude
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Word Origin

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