The meaning of FRO is from.

The phase describes the to and fro of an oscillation, and hence the rhythmic motion of the electron pair.

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Definition of fro adverb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Nov 18, 2025 · In modern English, used only in the set phrase to and fro (“back and forth”). [1]

For a month or so in midsummer, one will see them speeding endlessly to and fro across the sky.

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