What's the difference between oxytone and proparoxytone?

Oxytone

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Definition:

• (a.) Having an acute sound; (Gr. Gram.), having an acute accent on the last syllable.
• (n.) An acute sound.
• (n.) A word having the acute accent on the last syllable.

Example Sentences:

Proparoxytone

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Definition:

• (n.) A word which has the acute accent on the antepenult.

Example Sentences: