antiparticle

noun 0.761

antielectron

noun 0.754

positron

noun 0.743

antihydrogen

noun 0.732

antibaryon

noun 0.701

antimatter

noun 0.693

antiquark

noun 0.689

proton

noun 0.675

positronium

noun 0.668

anti

noun 0.626

antiprogestin

noun 0.612

alpha particle

noun 0.594

antineutrino

noun 0.583

proton number

noun 0.578

deuteron

noun 0.565

hadron

noun 0.564

beta particle

noun 0.560

antineutron

noun 0.558

antipode

noun 0.558

subatomic particle

noun 0.557

muonium

noun 0.556

antiprism

noun 0.550

particle accelerator

noun 0.546

antipodal

noun 0.543

betatron

noun 0.542

antipsychotic

noun 0.541

antonym

noun 0.539

antithrombin

noun 0.539

elementary particle

noun 0.537

anticommutation

noun 0.535

down quark

noun 0.534

antiradical

noun 0.532

fermion

noun 0.532

photino

noun 0.531

antithrombotic

noun 0.531

antiperiodic

noun 0.530

anion

noun 0.530

electron neutrino

noun 0.530

antiparallel

noun 0.529

antagonist

noun 0.528

antiport

noun 0.527

antipope

noun 0.524

antidopaminergic

noun 0.523

protactinium

noun 0.523

contra

noun 0.521

antiparasitic

noun 0.521

promethium

noun 0.520

antiphase

noun 0.519

baryon

noun 0.519

neutrino

noun 0.519

ante

noun 0.518

antitoxin

noun 0.517

antipodean

noun 0.517

parahydrogen

noun 0.516

antiparty

noun 0.514

deuteride

noun 0.513

anticonvulsant

noun 0.513

counterproof

noun 0.513

antisense

noun 0.512

bottom quark

noun 0.512

antimissile

noun 0.511

top quark

noun 0.510

neutron

noun 0.509

antithesis

noun 0.509

proton pump

noun 0.508

propyl

noun 0.508

muon neutrino

noun 0.508

antimicrotubule

noun 0.508

beta radiation

noun 0.508

nucleon

noun 0.506

propionate

noun 0.506

photon

noun 0.505

lepton

noun 0.504

photoelectron

noun 0.504

strange quark

noun 0.504

antisystem

noun 0.503

prostanoid

noun 0.503

charmonium

noun 0.503

anta

noun 0.502

anti-art

noun 0.502

antic

noun 0.501

polariton

noun 0.501

antiproliferative

noun 0.501