| 1. | Also, a.v. ad valorem. |
| 2. | audiovisual. |
| the system of weights in British and U.S. use for goods other than gems, precious metals, and drugs: 27 11/32 grains = 1 dram; 16 drams = 1 ounce; 16 ounces = 1 pound; 112 pounds (Brit.) or 100 pounds (U.S.) = 1 hundredweight; 20 hundredweight = 1 ton. The pound contains 7000 grains. Abbreviation: av.; avdp.; avoir. |

| au·di·o-vis·u·al also au·di·o·vis·u·al (ô'dē-ō-vĭzh'ōō-əl) adj.
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| Au·thor·ized Version (ô'thə-rīzd') n. Abbr. AV See King James Bible. |
Av (äv, ôv) n. The 11th month of the year in the Jewish calendar. See Table at calendar. [Mishnaic Hebrew 'āb, from Akkadian abu, a month name (July/August).] |
| AV abbr.
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atrioventricular a·tri·o·ven·tric·u·lar (ā'trē-ō-věn-trĭk'yə-lər)
adj.
Abbr. A-V
Of or relating to the atria and the ventricles of the heart.
A-V abbr.
arteriovenous
atrioventricular
avoirdupois weight n.
A system of weights and measures based on a pound containing 16 ounces or 7,000 grains and equal to 453.59 grams.
| avoirdupois weight (āv'ər-də-poiz') Pronunciation Key
A system of weights and measures based on a pound containing 16 ounces or 7,000 grains, and equal to 453.59 grams. Avoirdupois weight is used in the United States to weigh everything except gems, precious metals, and drugs. Compare troy weight. |
av
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AV
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