Fiber
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
The term applied to the veins in a tobacco leaf. The large central vein is called the midrib or stem. The smaller lateral and cross veins are considered from the standpoint of size and color and in some types are treated as elements of quality. In Burley, fiber size and color are not of great importance, except where a fine distinction must be made between several lots of high quality or between sides of the same lot.
[24 FR 8771, Oct. 29, 1959. Redesignated at 49 FR 16757, Apr. 20, 1984]
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