THE UNDERGROUND RAILROAD. By Colson Whitehead. 306 pp. Doubleday. $26.95. Colson Whiteheadâs novels are rebellious creatures: Each one of them goes to great lengths to break free of the last one, of its structure and language, of its areas of interest.
Natron is a naturally occurring mixture of sodium carbonate decahydrate (Na 2 C O 3 Â·10H 2 O, a kind of soda ash) and around 17% sodium bicarbonate (also called baking soda, NaHCO 3) along with small quantities of sodium chloride and sodium sulfate.
nephron noun [C]. âº a âbasic âunit of the âkidney: The âkidneys âcontain millions of âtiny âfiltering âunits called nephrons. (Definition of nephron from the Cambridge Advanced Learner's Dictionary & Thesaurus Â© Cambridge University Press).ne area of particular interest to our users is that of English Language Teaching (ELT), and a number of ELT terms have recently been added to the dictionary. Weâve added some of the words that learners of English might.