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osteophyte - a small pathological bony outgrowth. I think “exostosis” is used more commonly.
exostosis n., pl. 3ses# 73scz#8 5ModL < Gr exostbsis < ex3, outside + osteon, a bone: see OSTEO36 an abnormal bony growth on the surface of a bone or tooth
osteosarcoma - a malignant tumor of bone. Embrologically, the body is built from three layers, epidermal, endodermal, and mesodermal. Mesodermal malignancies are far less common, and are called sarcoma
mesenchyme 5< MES3 + ModL 3enchyma, suffix denoting a type of cell tissue: see PARENCHYMA6 Embryology that part of the unspecialized mesoderm from which the connective tissues, cartilage, bone, blood, heart, and lymphatic vessels are derived mes[en[chy[mal 7mes e%4ki m!l, mez38 adj.
ostium n., pl. 3ti[a 73!8 5L ostium: see OSTIARY6 Anat. an opening or orifice Ostia ancient city in Latium, at the mouth of the Tiber, that was the port of Rome
ounce n. 5OFr unce < L uncia, a twelfth, twelfth part of a foot or pound, orig., unit, akin to L unus, ONE6 1 a unit of weight, equal to Y pound, avoirdupois or ! pound troy 2 FLUID OUNCE 3 any small amount !an ounce of care" Abbrev. oz
ounce2 7/ns8 n. 5ME once < OFr < l‘once, mistaken for lonce < VL *luncea < L lynx, LYNX6 SNOW LEOPARD
Interesting that originally an ounce meant a twelfth, it now means a sixteenth. And remember, troy weight is used for silver, gold, and precious stones. My dictionary does not give difference between troy weight, and avoirdupois, used for ordinary commerce.
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Interesting that originally an ounce meant a twelfth, it now means a sixteenth.
any ideas why/when it changed?
formerly known as etaoin...
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Dear etaoin: So far I haven't had any luck searching. Mostly for not having to think of right search words. The twelve unit pattern is obviously older. I can't imagine why the sixteen unit system came into existence.
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Carpal Tunnel
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The avoirdupois pound is the pound in general use today...This pound is of 7000 grains, and is split into 16 ounces (each, therefore of 437.5 grains). Each ounce is divided into 16 drams...
The Troy pound was of 5760 grains, and was divided into 12 ounces, so a troy pound is lighter than an avoirdupois pound, but a troy ounce (at 480 grains) weighs more than an avoirdupois ounce (EA)
avoirdupois weights: 16 drams = 1 ounce 16 ounces = 1 pound 7 pounds = 1 clove 14 pounds = 1 stone 28 pounds = 1 tod 112 pounds = 1 hundredweight 364 pounds = 1 sack 2240 pounds = 1 ton 2 stones = 1 quarter 4 quarters = 1 hundredweight 20 hundredweight = 1 ton
NB: The sack is not in common use. There was a 'Butchers stone' of 8lb until the end of 1939... (from http://home.clara.net/brianp/weights.html)
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The failure of the U.S. to convert to the metric system completely is our biggest national disgrace.
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I agree, wwh. In reply to:
2240 pounds = 1 ton
There are several different weights for tons, depending upon the specific kind of ton that is wanted. I've forgotten the different names for the types of tons and the various weights that distinguish them from each other, but I think there are at least three different kinds of tons.
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I've seen the metric (long) ton (=2240 lb, also =1000 kg) referred to as a "Tonne" and spelled that way deliberately so as to differentiate it from the US (short) ton (=2000 lb).
and of course there is the Chinese (won) ton
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when I was in grade school in the early 70's, we spent some time learning the metric system, because the US would be converting during the next decade... sadly, that never happened. [sad] of course, we were dealing with Richard Nixon and Gerald Ford at the time, so it isn't a wonder...
formerly known as etaoin...
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I don't see how we can blame Nixon or Ford. The problem was at the grassroot level. Too many slobs satisfied with the status quo. Canada tried hard, but even up there, they seem to have given up insistence of kilometer road signs.
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you're right, Bill, and I don't really blame them, we were all dealing with their troubles at the time...
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