DICTIONARY ENTRY
4 SYLLABLES
promethium
/prə'miθiəm/ · prəmiθiəm
Promethium has 4 syllables: pro · me · thi · um.
pro
01
me
02
thi
03
um
04
noun. A soft silvery metallic element of the rare earth group having no stable isotope; was discovered in radioactive form as a fission product of uranium.
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