valonia

[ vuh-loh-nee-uh ]

/ vəˈloʊ ni ə /

acorn cups of an Old World oak, Quercus macrolepis (or Q. aegilops), used in tanning, dyeing, and making ink.

Origin of valonia

1715–25; < Italian vallonia < Modern Greek balánia, plural of baláni acorn

vallum, valmid, valmiki, valois, valona, valonia, valor, valorize, valorous, valour, valparaiso

The oak woods of Ceos (Ze) and Ios furnish considerable supplies of valonia.

Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8 |Various
It is considered slightly inferior in strength and colour to the Smyrna valonia.

Animal Proteins |Hugh Garner Bennett
The material is chiefly pine bark, but some oak bark, valonia, myrabs and quebracho are also used.

Animal Proteins |Hugh Garner Bennett
Its use is almost wholly confined to the handlers, as its weight returns are not so satisfactory as oak or valonia.

Scientific American Supplement, No. 803, May 23, 1891 |Various

The union of valonia and knoppern is that in most general use.

Scientific American Supplement, No. 803, May 23, 1891 |Various

valonia

/ (vəˈləʊnɪə) /

the acorn cups and unripe acorns of the Eurasian oak Quercus aegilops, used in tanning, dyeing, and making ink

C18: from Italian vallonia, ultimately from Greek balanos acorn