What does pref stand for?

Preface (WDAA)

prefatory (SAUS)

Preference (SHCU)

Prefix - Linguistics (IEL)

PFT Roberson - Common carrier symbol

Preface

Prefecture

Prefer (SAUS)

Preference - or Preferred (AFM)

Preferred (KSC)

Prefix (AAG)

Prefocused

Propulsion Research Environmental Facility

Preference (SPSG)

Reformist Party (Dominican Rep.) - Political party (PSAP)