THUJA
Thu"ja, n. Etym: [NL., from Gr. (Bot.)
Defn: A genus of evergreen trees, thickly branched, remarkable for the distichous arrangement of their branches, and having scalelike, closely imbricated, or compressed leaves. [Written also thuya.] See Thyine wood.
Note: Thuja occidentalis is the Arbor vitæ of the Eastern and Northern United States. T. gigantea of North-waetern America is a very large tree, there called red cedar, and canoe cedar, and furnishes a useful timber.
THULE
Thu"le, n. Etym: [L. Thule, Thyle, Gr.
Defn: The name given by ancient geographers to the northernmost part of the habitable world. According to some, this land was Norway, according to others, Iceland, or more probably Mainland, the largest of the Shetland islands; hence, the Latin phrase ultima Thule, farthest Thule.
THULIA
Thu"li*a, n. Etym: [NL.] (Chem.)
Defn: Oxide of thulium.
THULIUM
Thu"li*um, n. Etym: [NL. See Thule.] (Chem.)
Defn: A rare metallic element of uncertain properties and identity, said to have been found in the mineral gadolinite.
THUMB Thumb, n. Etym: [OE. thombe, thoumbe, , AS. ; akin to OFries. th, D. duim, G. daumen, OHG. d, Icel. , Dan. tommelfinger, Sw. tunne, and perhaps to L. tumere to swell. *56. Cf. Thimble, Tumid.]