helicon

Etymology
Probably from, after.

Noun

 * 1)  A large tuba whose coils fit around the player's shoulders.
 * 2)  A low-frequency electromagnetic wave observed in various plasmas.
 * 1)  A low-frequency electromagnetic wave observed in various plasmas.

Translations

 * Bulgarian: бас-туба
 * Catalan:
 * Italian:
 * Russian:

Etymology
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