a brown to white poisonous crystalline solid, more than 95 per cent of which consists of the compound C12H8Cl6, which is used as an insecticide. Melting pt: 105°C
Word origin
C20: named after K. Alder (1902–58) German chemist
Word Frequency
Aldrin
(ˈɔːldrɪn)
noun
Edwin Eugene Jr, known as Buzz. born 1930, US astronaut; the second person to set foot on the moon on July 20, 1969, during the Apollo 11 flight