primordial

noun 0.728

protome

noun 0.624

progenitor

noun 0.623

prodrome

noun 0.609

incipience

noun 0.607

primogenitor

noun 0.606

meristem

noun 0.589

protomer

noun 0.587

precursor

noun 0.585

proloculus

noun 0.584

morphogenesis

noun 0.580

primitive

noun 0.580

embryo

noun 0.579

proem

noun 0.569

embryoblast

noun 0.569

primary

noun 0.569

morphogen

noun 0.566

plumule

noun 0.564

embryogenesis

noun 0.563

embryoid

noun 0.559

rudiment

noun 0.559

precursory

noun 0.559

primal

noun 0.557

protoplanet

noun 0.556

appressorium

noun 0.554

incipient

noun 0.554

propagule

noun 0.551

organogenesis

noun 0.549

prolegomenon

noun 0.548

origo

noun 0.547

preformation

noun 0.546

protoplasm

noun 0.545

protostome

noun 0.543

primary ideal

noun 0.537

primula

noun 0.536

proemium

noun 0.535

preprophase

noun 0.535

prematurity

noun 0.535

primeur

noun 0.532

peridium

noun 0.531

primus

noun 0.531

preliminary

noun 0.531

primitive concept

noun 0.530

prim

noun 0.530

exordium

noun 0.530

preemie

noun 0.529

prophase

noun 0.527

protostar

noun 0.524

beginning

noun 0.523

initial

noun 0.523

organoid

noun 0.522

praenomen

noun 0.522

protocell

noun 0.521

prelude

noun 0.521

prelim

noun 0.519

pronucleus

noun 0.517

germ layer

noun 0.515

protologue

noun 0.514

preterm

noun 0.514

blastoderm

noun 0.514

primocane

noun 0.513

promontorium

noun 0.513

initial object

noun 0.513

praevia

noun 0.512

germ

noun 0.512

premature

noun 0.512

forepart

noun 0.511

plantlet

noun 0.511

trophectoderm

noun 0.511

prepositive

noun 0.510

sinciput

noun 0.510

primitiveness

noun 0.510

prem

noun 0.509

plasmodium

noun 0.509

preverb

noun 0.508

incipiency

noun 0.507

phytogeny

noun 0.506

archenteron

noun 0.505

primitivo

noun 0.504

preluding

noun 0.503

spermatogonium

noun 0.503

haustorium

noun 0.502

planetesimal

noun 0.502

primate

noun 0.502

primordial sea

noun 0.501

pogonia

noun 0.501

rudimentary

noun 0.501