des·tri·er (dĕstrē-ər, dĭ-strîr)
[Middle English destrer, from Anglo-Norman, variant of Old French destrier (a destrier being so called because the squire usually walked at the left side of the horse and led it with his right hand) : destre, right hand (from Latin dextra, from feminine of dexter, right (in dextra manus, right hand); see deks- in the Appendix of Indo-European roots) + -ier, noun and adjective suffix (from Latin -ārius).]
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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:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.