Defn: Same as Thallogen.
THALLOUS
Thal"lous, a. (Chem.)
Defn: Of or pertaining to thallium; derived from, or containing, thallium; specifically, designating those compounds in which the element has a lower valence as contrasted with the thallic compounds. [Written also thallious.]
THALLUS
Thal"lus, n.; pl. Thalli. Etym: [NL., fr. Gr. (Bot.)
Defn: A solid mass of cellular tissue, consisting of one or more layers, usually in the form of a flat stratum or expansion, but sometimes erect or pendulous, and elongated and branching, and forming the substance of the thallogens.
THALWEG Thal"weg`, n. [G., fr. thal valley + weg way. See Dale; Way.] (Physiography) (a) A line following the lowest part of a valley, whether under water or not. (b) The line of continuous maximum descent from any point on a land surface, or that cutting all contours and angles.
THAMMUZ; TAMMUZ
Tham"muz, Tam"muz, n. Etym: [Heb. thammuz.]
1. A deity among the ancient Syrians, in honor of whom the Hebrew idolatresses held an annual lamentation. This deity has been conjectured to be the same with the Phoenician Adon, or Adonis. Milton.
2. The fourth month of the Jewish ecclesiastical year, — supposed to correspond nearly with our month of July.
THAMNOPHILE
Tham"no*phile, n. Etym: [Gr. qa`mnos a bush + fi`los loving.] (Zoöl.)