/ Dictionary / Index B berkelium: Meaning and Definition of Find definitions for: ber•ke•li•um Pronunciation: (bur-kē'lē-um), [key] — n. Chem. a transuranic element. Symbol: Bk; at. no.: 97; at. wt.: 249 (?). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: berkelium (Thesaurus) Berkeleyism Berkley Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language