prolegomenon

noun 0.678

prologue

noun 0.662

proemium

noun 0.627

proem

noun 0.621

protome

noun 0.581

proloculus

noun 0.575

preface

noun 0.572

propositus

noun 0.560

propaedeutic

noun 0.549

proleg

noun 0.548

incipit

noun 0.546

propaedia

noun 0.541

exordium

noun 0.540

prodrome

noun 0.536

prototype

noun 0.535

proto-language

noun 0.527

preamble

noun 0.525

prelude

noun 0.525

holotype

noun 0.525

foreword

noun 0.524

prolepsis

noun 0.517

protasis

noun 0.516

protomartyr

noun 0.515

prolocutor

noun 0.515

primordium

noun 0.514

protomer

noun 0.514

proclitic

noun 0.511

title page

noun 0.509

preproposal

noun 0.508

provenience

noun 0.504

paralogue

noun 0.502

frontispiece

noun 0.501

preluding

noun 0.501