any of a subgroup of rare-earth metals, of which the cerium and yttrium metals comprise the other two subgroups.
(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.
noun, Ecclesiastical. 1. tierce (def 3). noun 1. (mainly RC Church) the third of the seven canonical hours of the divine office, originally fixed at the third hour of the day, about 9 a.m.