archaean

noun 0.786

archaebacterium

noun 0.779

archaeol

noun 0.722

archaeologist

noun 0.652

archon

noun 0.629

archaeology

noun 0.627

arche

noun 0.624

methanogen

noun 0.612

archaeobotany

noun 0.600

archaic

noun 0.595

prokaryote

noun 0.595

arch

noun 0.585

archaeozoology

noun 0.582

anaerobe

noun 0.579

protozoan

noun 0.571

archy

noun 0.568

ancient

noun 0.561

extremophile

noun 0.560

protist

noun 0.559

archegonium

noun 0.557

archenteron

noun 0.550

archaeometry

noun 0.549

aragonite

noun 0.548

arc

noun 0.548

eukaryote

noun 0.546

ark

noun 0.543

protozoon

noun 0.543

exarch

noun 0.542

cryptomonad

noun 0.541

actinomycete

noun 0.540

arachnoid

noun 0.535

archaism

noun 0.535

prion

noun 0.534

arthropod

noun 0.534

acanthodian

noun 0.530

organism

noun 0.526

hyperthermophile

noun 0.525

arching

noun 0.524

ammonite

noun 0.522

bacterium

noun 0.521

arachnid

noun 0.521

aryne

noun 0.520

actinium

noun 0.518

anion

noun 0.517

arctiid

noun 0.517

eukaryotic

noun 0.517

acarine

noun 0.516

foraminiferan

noun 0.515

zooarchaeology

noun 0.514

amoeba

noun 0.514

archetype

noun 0.513

archdemon

noun 0.513

astrobiology

noun 0.513

fungus

noun 0.512

protocell

noun 0.512

microorganism

noun 0.512

bacteroid

noun 0.512

archer

noun 0.512

halophile

noun 0.512

archonship

noun 0.510

aerobe

noun 0.510

common ancestor

noun 0.508

arcosolium

noun 0.508

mitochondrion

noun 0.507

hominin

noun 0.507

thermophile

noun 0.506

organelle

noun 0.506

archiver

noun 0.504

antiquarian

noun 0.504

arachidonyl

noun 0.504

methanotroph

noun 0.504

crustacean

noun 0.504

arene

noun 0.503

hydrogenosome

noun 0.503

eon

noun 0.503

paleontologist

noun 0.502

actinide

noun 0.501

paleoanthropologist

noun 0.501