pro ra·ta (prō rātə, rä-, rătə)
In proportion, according to a factor that can be calculated exactly.
[Latin prō ratā (parte), according to the calculated (share) : prō, according to + ratā, feminine ablative of ratus, calculated.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
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