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Definition of Helium speech
1. Noun. the effect on the timbre of speech after inhaling helium, due to the difference in the speed of sound in that gas (note - there is no difference in the pitch of the sound produced) ¹
¹ Source: wiktionary.com
Medical Definition of Helium speech
1. The peculiar high-pitched, often unintelligible speech sounds produced when one breathes a mixture of up to 80 per cent helium and 20 per cent oxygen. (05 Mar 2000)
Lexicographical Neighbors of Helium Speech
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