1. Abbr. av. or avdp. Avoirdupois weight.
2. Informal Weight or heaviness, especially of a person.
[Middle English avoir de pois, commodities sold by weight, alteration of Old French aveir de peis, goods of weight : aveir, avoir, to have (from Latin habēre; see ABLE) + de, of (from Latin dē, from; see DE-) + peis, pois, weight (from Vulgar Latin *pēsum, from Latin pēnsum, past participle of pendere, to hang; see (s)pen- in the Appendix of Indo-European roots).]
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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.