rock·oon 
(rŏ-kn)
(rŏ-kn)n.
A device used for high-altitude sounding, composed of a small, solid-propellant rocket that is launched from a balloon.
[ROCK(ET)1 + (BALL)OON.]
| 单词 | rockoon |
| 释义 | rock·oon (rŏ-kn)n. A device used for high-altitude sounding, composed of a small, solid-propellant rocket that is launched from a balloon. [ROCK(ET)1 + (BALL)OON.] |
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