(mineralogy) A plagioclase feldspar, the fifth member of the Albite-Anorthite solid solution series. Bytownite is rare, and normally occurs in small grains in lime-rich igneous rocks. Clear pale yellow crystals have come from Mexico and Oregon.
tewksbury
twayblade
twayblade
noun
Any of several orchids, of the genera Neottia (syn. Listera) and Liparis, that have a pair of basal leaves.
twinberry
twinberry
noun
A North American species of honeysuckle, Lonicera involucrata.
Its fruit, a bitter edible black berry containing several small seeds.
wartyback
wartyback
noun
Synonym of pimpleback (mussel)
waterbury
wattleboy
weatherby
weibyeite
weibyeite
noun
(mineralogy, obsolete) A supposed mineral from Norway, later identified as bastnaesite or ancylite.
