quercitron

American  

[kwur-si-truhn] / ˈkwɜr sɪ trən /

noun

1. an oak, Quercus velutina, of eastern North America, the inner bark of which yields a yellow dye.

2. the bark itself.

3. the dye obtained from this bark.

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Etymology

Origin of quercitron

1785–95; < Latin quer ( cus ) oak + citron

Example Sentences

Under the deep-furrowed, brown surface bark is a yellow layer, rich in tannin, and a dyestuff called quercitron.

From Project Gutenberg

The American quercitron bark gives us also a useful additional yellow dye.

From Project Gutenberg

A very minute proportion of quercetin, a principle yielded by quercitron bark, has been obtained from catechu.

From Project Gutenberg

Brown.—Prepare a bath with 20 lb. cutch, 2 lb. copper sulphate, 4 lb. quercitron extract.

From Project Gutenberg

Similarly the dyer proceeds to dye black upon a deep blue basis of indigo, with the ruddy colour of madder and the yellow of quercitron, &c.

From Project Gutenberg