quarkonium

noun 0.761

charm quark

noun 0.597

positronium

noun 0.592

charmel

noun 0.583

hadron

noun 0.580

harmonium

noun 0.577

antibaryon

noun 0.573

muonium

noun 0.565

pentaquark

noun 0.562

antiquark

noun 0.554

antihydrogen

noun 0.550

strange quark

noun 0.544

immonium

noun 0.543

ammonium

noun 0.524

harmonic

noun 0.524

phosphonium

noun 0.523

hyperon

noun 0.520

homotrimer

noun 0.520

baryon

noun 0.520

homodimer

noun 0.515

hydronium

noun 0.514

monoammonium

noun 0.513

chromodynamics

noun 0.511

harmonizer

noun 0.511

quantum chromodynamics

noun 0.511

harmonics

noun 0.508

protium

noun 0.504

parahydrogen

noun 0.504

antiproton

noun 0.503

top quark

noun 0.502