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  • English Word Thalamiflorous Definition Bearing the stamens directly on the receptacle; -- said of a subclass of polypetalous dicotyledonous plants in the system of De Candolle.
  • English Word Thalamocoele Definition The cavity or ventricle of the thalamencephalon; the third ventricle.
  • English Word Thalamophora Definition Same as Foraminifera.
  • English Word Thalamus Definition A mass of nervous matter on either side of the third ventricle of the brain; -- called also optic thalamus.
  • English Word Thalamus Definition Same as Thallus.
  • English Word Thalamus Definition The receptacle of a flower; a torus.
  • English Word Thalassian Definition Any sea tortoise.
  • English Word Thalassic Definition Of or pertaining to the sea; -- sometimes applied to rocks formed from sediments deposited upon the sea bottom.
  • English Word Thalassinian Definition Any species of Thalaassinidae, a family of burrowing macrurous Crustacea, having a long and soft abdomen.
  • English Word Thalassography Definition The study or science of the life of marine organisms.
  • English Word Thaler Definition A German silver coin worth about three shillings sterling, or about 73 cents.
  • English Word Thalia Definition That one of the nine Muses who presided over comedy.
  • English Word Thalia Definition One of the three Graces.
  • English Word Thalia Definition One of the Nereids.
  • English Word Thaliacea Definition A division of Tunicata comprising the free-swimming species, such as Salpa and Doliolum.
  • English Word Thalian Definition Of or pertaining to Thalia; hence, of or pertaining to comedy; comic.
  • English Word Thallate Definition A salt of a hypothetical thallic acid.
  • English Word Thallene Definition A hydrocarbon obtained from coal-tar residues, and remarkable for its intense yellowish green fluorescence.
  • English Word Thalli Definition of Thallus
  • English Word Thallic Definition Of or pertaining to thallium; derived from, or containing, thallium; specifically, designating those compounds in which the element has a higher valence as contrasted with the thallous compounds; as, thallic oxide.
  • English Word Thalline Definition Consisting of a thallus.
  • English Word Thalline Definition An artificial alkaloid of the quinoline series, obtained as a white crystalline substance, C10H13NO, whose salts are valuable as antipyretics; -- so called from the green color produced in its solution by certain oxidizing agents.
  • English Word Thallious Definition See Thallous.
  • English Word Thallium Definition A rare metallic element of the aluminium group found in some minerals, as certain pyrites, and also in the lead-chamber deposit in the manufacture of sulphuric acid. It is isolated as a heavy, soft, bluish white metal, easily oxidized in moist air, but preserved by keeping under water. Symbol Tl. Atomic weight 203.7.
  • English Word Thallogen Definition One of a large class or division of the vegetable kingdom, which includes those flowerless plants, such as fungi, algae, and lichens, that consist of a thallus only, composed of cellular tissue, or of a congeries of cells, or even of separate cells, and never show a distinction into root, stem, and leaf.
  • English Word Thalloid Definition Resembling, or consisting of, thallus.
  • English Word Thallophyte Definition Same as Thallogen.
  • English Word Thallous Definition 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.
  • English Word Thallus Definition 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.
  • English Word Thammuz Definition Alt. of Tammuz