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Minimalist Dictionary
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protactinium
/ˌpɹəʊ.tækˈtɪn.i.əm/
noun
Synonyms
protoactinium
A chemical element (symbol Pa) with atomic number 91: a dense, silvery-gray actinide metal.
Word Frequency 1800~2019
Related words
Other words
switch
aeration
rounding
engraved
confetti
alias
outwit
backer
neurology
outback
nylon
defuse
tumbling
getaway
depravity
unworried
factual
plaster
caramel
filled
pa
atomic number 91
protoactinium
actinium
transuranium
protium
neptunium
curium
technetium
ionium
berkelium
francium
tetrafluoride
plutonium
americium