Not really, because it doesn't address the "why" issue -- only the "what." I think Jim Frysinger has now dealt with the "why."
By the way, the presence of that definition on the Rowlett web site is violation of copyright law (unless explicit permission for its use has been given). I believe it's an exact copy from the on-line Oxford English Dictionary (in which I looked for the same thing only this morning). Bill Potts, CMS Roseville, CA http://metric1.org [SI Navigator] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of kilopascal Sent: Thursday, March 14, 2002 15:03 To: U.S. Metric Association Subject: [USMA:18766] Re: Root for "lb" 2002-03-14 Does this help? >From http://www.unc.edu/~rowlett/units/dictP.html pound (lb, lbm, or #) [1] a traditional unit of mass or weight. The Romans used a pound (the libra pondo, "pound of weight") divided into 12 ounces. All the countries of western Europe used similar units, divided into 12 or 16 ounces, until the advent of the metric system. 12-ounce pounds were common in Italy and southern France, but in Spain and northern Europe 16-ounce pounds became the norm. The word libra is used for this unit in Italy, Spain, and Portugal; in France it is called the livre. Further north, the Latin word pondo ("weight") is the origin of the names of the English pound, Dutch pond, Danish pund, German pfund, and Russian funt. In England, two different "pound" units became standard. The unit now in general use in the United States is the avoirdupois pound, so-called from a French phrase avoir du poids, literally "goods of weight," indicating simply that the goods were being sold by weight rather than by volume or by the piece. The avoirdupois pound is divided into 16 ounces. By international agreement, one avoirdupois pound is equal to exactly 453.592 37 grams; this is exactly 175/144 = 1.215 28 troy pounds. See avoirdupois weights for additional information. The traditional symbol lb stands for libra, the Latin word for the unit. The avoirdupois pound is sometimes abbreviated lb av or lb ap to distinguish it from the less common troy pound.The symbol lbm is used in science to distinguish the pound of mass from the pound of force (lbf): see pound force, below. pound (lb t or lb or #) [2] a second traditional unit of mass or weight. The troy pound, named for the French market town of Troyes, was the unit used in England by apothecaries and jewelers. The troy pound is divided into 12 ounces like the Roman pound. One troy pound is 373.242 grams, or exactly 144/175 = 0.822 858 avoirdupois pounds (13.165 72 avoirdupois ounces). The troy and avoirdupois pounds are connected by the grain: there are 5760 grains in a troy pound and 7000 grains in an avoirdupois pound. See troy weights for additional information. The troy pound should be abbreviated lb. t. to distinguish it from the more common avoirdupois pound. John ----- Original Message ----- From: "Jim McCracken" <[EMAIL PROTECTED]> To: "U.S. Metric Association" <[EMAIL PROTECTED]> Sent: Thursday, 2002-03-14 09:26 Subject: [USMA:18751] Root for "lb" > I know that this list dislikes my requests for "non-metric" information, > but we have an inquiry about the use of the "lb" for pound. I know from my > knowledge of weights and measures development that the "lb" derived from > the Latin root "libra." However, I have no documents in our library that > trace this use. > > If anyone has some old material the traces this use please reply directly > to me. We don't need a long thread on this that quickly gets off topic. > > Much thanks, as always, > > Jim McCracken >
