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1. protactinium
noun.
A
short-lived
radioactive
metallic
element
formed
from
uranium
and
disintegrating
into
actinium
and
then
into
lead.
Synonyms
metal
protoactinium
Pa
metallic element
atomic number 91
Antonyms
nonmetallic
Etymology
protactinium (English)
actinium (English)
-ium (English)
-um (Latin)
actin- (English)
proto- (English)
Trending Searches 🔥
philander
antonym
ampersand
synonym
perspective
mercurial
negative-impact
out-of-the-box thinking
challenge
scavenger
seamless
attire
crony
abut
cohesiveness
nullify
divergent
potential
technology
gaunt
good
barren
vulnerability
plummet
rankle
century
stoical
bandwagon
environment
for-the-first-time
bittersweet