a rare-earth, metallic element present in certain minerals and yielding colorless salts. Symbol: Tb; atomic number: 65; atomic weight: 158.924; specific gravity: 8.25.
a soft malleable silvery-grey element of the lanthanide series of metals, occurring in gadolinite and monazite and used in lasers and for doping solid-state devices. Symbol: Tb; atomic no: 65; atomic wt: 158.92534; valency: 3 or 4; relative density: 8.230; melting pt: 1356°C; boiling pt: 3230°C
terbium ter·bi·um (tûr’bē-əm)
A soft metallic rare-earth element used in x-ray tubes. Atomic number 65; atomic weight 158.925; melting point 1,359°C; boiling point 3,221°C; specific gravity 8.23; valence 3, 4.
A soft, silvery-gray metallic element of the lanthanide series. It is used in color television tubes, x-ray machines, and lasers. Atomic number 65; atomic weight 158.925; melting point 1,356°C; boiling point 3,123°C; specific gravity 8.229; valence 3, 4. See Periodic Table.
noun, Chemistry. 1. any of a subgroup of rare-earth metals, of which the cerium and yttrium metals comprise the other two subgroups. terbium metal noun 1. (chem) any of a group of related lanthanides, including terbium, europium, and gadolinium
- Ter Borch
noun 1. Gerard [kh-ey-rahrt] /xˈeɪ rɑrt/ (Show IPA), 1617–81, Dutch painter. noun 1. Gerard (ˈxeːrɑrt). 1617–81, Dutch genre and portrait painter
noun 1. Hendrik. 1588–1629, Dutch painter of the Utrecht school, who specialized in religious subjects, for example the Incredulity of St Thomas and the Calling of St Matthew
noun, Pharmacology. 1. a selective beta-adrenergic receptor agonist substance, C 12 H 19 NO 3 , used in the treatment of asthma.