Associations to the word «Protoactinium»
Noun
Adjective
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Wiktionary
PROTOACTINIUM, noun. Alternative form of protactinium (dated)
Dictionary definition
PROTOACTINIUM, noun. A short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead.
Wise words
It is better wither to be silent, or to say things of more
value than silence. Sooner throw a pearl at hazard than an
idle or useless word; and do not say a little in many words,
but a great deal in a few.