illinium

[ ih-lin-ee-uh m ]
/ ɪˈlɪn i əm /

noun Chemistry. (formerly)

promethium. Symbol: Il

Origin of illinium

1925–30; named after Illinois; see -ium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for illinium

illinium

/ (ɪˈlɪnɪəm) /

noun

chem the former name for promethium

Word Origin for illinium

C20: New Latin, from Illinois + -ium
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012