• WordNet 3.6
    • n quercitron medium to large deciduous timber tree of the eastern United States and southeastern Canada having dark outer bark and yellow inner bark used for tanning; broad five-lobed leaves are bristle-tipped
    • n quercitron a yellow dye made from the bark of the quercitron oak tree
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Webster's Revised Unabridged Dictionary
    • Quercitron Quercitrin, used as a pigment. See Quercitrin.
    • Quercitron The yellow inner bark of the Quercus tinctoria, the American black oak, yellow oak, dyer's oak, or quercitron oak, a large forest tree growing from Maine to eastern Texas.
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Century Dictionary and Cyclopedia
    • n quercitron The black or dyers' oak, Quercus tinctoria, a tree from 70 to 100 feet high, common through the eastern half of the United States and in southern Canada. Its wood is of some value, and its bark is of considerable importance. The latter, though outwardly dark, is inwardly yellow, whence the tree is also called yellow or yellow-bark oak.
    • n quercitron The bark of this tree. It contains, in the principle quercitrin, a yellow dye, which is now used in the form of a preparation called flavin. It is also used for tanning, and occasionally in medicine, but the coloring matter hinders these applications.
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Chambers's Twentieth Century Dictionary
    • n Quercitron kwer′si-tron the name both of a dye-stuff and of the species of oak of which it is the bark—the Quercus coccinea of North America, also called Dyer's oak and Yellow-barked oak
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Webster's Revised Unabridged Dictionary
F. quercitron, the name of the name of tree; L. quercus, an oak + citrus, the citron tree,
Chambers's Twentieth Century Dictionary
L. quercus, oak, citrus, a tree of the lemon kind.


In literature:

Impregnate with brown oxide of iron, and then dip in a bath of quercitron bark.
"Enquire Within Upon Everything" by Anonymous
QUERCITRON, a yellow dye obtained from the bark of a North American oak.
"The Nuttall Encyclopaedia" by Edited by Rev. James Wood
Quercitron, which should be brought slowly to the boil and boiled for a few minutes only.
"Vegetable Dyes" by Ethel M. Mairet
The American quercitron bark gives us also a useful additional yellow dye.
"Arts and Crafts Essays" by Various
The same mordants, with a dye of quercitron bark, give yellow and olive or drab.
"Popular Technology, Vol. I (of 2)" by Edward Hazen