phonoprojectoscope
noun
pho·no·pro·jec·to·scope
ˌfōnōprəˈjektəˌskōp
: an instrument for projecting sound-vibration curves directly on a screen without first recording them photographically
Word History
Etymology
phon- + project + connective -o- + -scope
- gelatin dynamite
- gelatin film
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- gelatinase
- gelatinate
- gelatinated
- gelatinates
- gelatinating
- gelatination
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- gelatine
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- gelatinising