caesium-137

noun 0.786

caesium

noun 0.745

radiocarbon

noun 0.605

radionuclide

noun 0.602

radiochemical

noun 0.590

radiotracer

noun 0.587

radioactive

noun 0.578

radioactive tracer

noun 0.573

cerium

noun 0.571

radionucleotide

noun 0.563

rubidium

noun 0.554

radioisotope

noun 0.553

radiotoxicity

noun 0.550

radioiodine

noun 0.544

radiochemistry

noun 0.543

radiocolloid

noun 0.538

radioactive fallout

noun 0.537

radiolabel

noun 0.523

radium

noun 0.523

strontium

noun 0.512

curium

noun 0.511

californium

noun 0.511

radioreceptor

noun 0.511

radioecology

noun 0.508

radioactive waste

noun 0.508

technetium

noun 0.507

francium

noun 0.507

cadmium

noun 0.505

radioactivity

noun 0.505

radiation poisoning

noun 0.504

iodine-125

noun 0.503

medical isotope

noun 0.503