quercitron noun. ['kwǝ:sɪtr(ǝ)n] L18.
[Blend of Latin quercus oak + CITRON.]
The black oak of the southern US, Quercus velutina (also quercitron oak); (more fully quercitron bark) the inner bark of this, used as a source of the dye quercitrin and in tanning.

Comb.:
quercitron lake, quercitron yellow = quercitrin.

■ quercitrin noun the pale yellow crystalline pigment of quercitron bark, quercetin 3-rhamnoside, C₂₁H₂₀O₁₁, which yields quercetin and rhamnose on hydrolysis M19.

[TahlilGaran] English Dictionary ▲