PROTACTINIUMS
Scrabble letter values: P3R1O1T1A1C3T1I1N1I1U1M3S1 = 19
Definition
PROTACTINIUMS is the plural of PROTACTINIUM.
noun PROTACTINIUM: a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead.
Synonyms of PROTACTINIUM: protoactinium, Pa, atomic_number_91