Hyalograph definitions

Hyalograph

• (n.) An instrument for tracing designs on glass.
Found on http://thinkexist.com/dictionary/meaning/hyalograph/

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Hyalograph

Hy·al'o·graph noun [ Greek 'y`alos glass + graph .] An instrument for tracing designs on glass.
Found on http://www.encyclo.co.uk/webster/H/74

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hyalograph

an instrument used in hyalography.
Found on https://www.infoplease.com/dictionary/hyalograph

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