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Phrases starting with the letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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Definition of: acorn tube

A small thermionic radio tube for use at high frequencies. Also Brit. acorn valve.

Phrases starting with the letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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