querc-, querci- +

A flavonol containing many hydroxyl groups, found as its glucoside in plants, including the bark of the American oak Quercus tinctoria.

It is used as a dye.

Of or pertaining to the oak; made of oak, oaken.

Referring to, or designating, a tannic acid found in oak bark and extracted as a yellowish brown amorphous substance.

A white crystalline substance found in acorns, the fruit of the oak (Quercus).

It has a sweet taste, and is regarded as a pentacid (combining with, five molecules of a monobasic acid) alcohol.

A glucoside extracted from the bark of the oak (Quercus) as a bitter citron-yellow crystalline substance, used as a pigment and called quercitron.

1. 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.
2. Quercitrin, used as a pigment.

A 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 5-lobed leaves are bristle-tipped.

Feeding on the leaves of oak trees.

California live oak; coastal live oak: The Quercus agrifolia is a highly variable, often shrubby, evergreen oak on the coastal zone of western North America. It has small thick normally spiny-toothed dark-green leaves.

A medium to large deciduous tree of the eastern United States.

Its durable wood is used as timber or split and woven into baskets or chair seats.

A medium-sized evergreen oak of southern Europe and northern Africa having thick corky bark that is periodically stripped to yield commercial cork.

A medium to large deciduous tree of China, Japan, and Korea having a thick corky bark.

A medium-sized evergreen native to eastern North America to the east coast of Mexico.

Often cultivated as shade tree for its wide-spreading crown and extremely hard tough durable wood which was once used in shipbuilding.

A medium-small shrubby evergreen tree of western North America similar to the coast live oak but occurring chiefly in foothills of mountain ranges removed from the coast; an important part of the chaparral.

The dried inner bark of Quercus alba, white oak.

It contains tannic acid, pectin, and resin, and it is used as an astringent.