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“pretone”
The syllable or vowel preceding the stressed or accented syllable; Examples of such pretones are shown by the following terms, and, in these cases, where the first letters are vowels: "electron", "atomic", and "adopt".
This entry is located in the following units:
pre-, prae-
(page 18)
tono-, ton-, -tonia, -tonic, -tonous, -tony
(page 2)