Royal Institute of Chemistry
Radon Information Council
Richmond International Airport/Byrd Field
[ri-kahr-dee-uh n] /rɪˈkɑr di ən/ noun 1. economic rent.
noun 1. David, 1772–1823, English economist. noun 1. David. 1772–1823, British economist. His main work is Principles of Political Economy and Taxation (1817)
[ri-kah-tee; Italian reek-kah-tee] /rɪˈkɑ ti; Italian rikˈkɑ ti/ noun, Mathematics. 1. a differential equation, dy/dx + fy 2 + gy + h = 0, where f, g, and h are functions of x.
noun 1. Sebastiano [se-bahs-tyah-naw] /ˌsɛ bɑsˈtyɑ nɔ/ (Show IPA), 1660?–1734, Italian painter. noun 1. Matteo (maˈteo). 1552–1610, Italian Jesuit missionary and scholar, who introduced Christianity to China. He was later censured by the Church for allowing his converts to retain some of their ancient religious customs