What does Pen stand for?

Penicillin - Medicine (DMAA)

Pennewill's Delaware Reports - A publication (DLA)

Pennington's New Jersey Reports - 2, 3 New Jersey - A publication (DLA)

penal (SAUS)

Peninsula (NTIO)

Penitentiary (ADWA)

penmanship (SAUS)

Astoria, OR - Location identifier - FAA (FAAL)

International PEN - Official name; PEN, never spelled out in use, is said to stand for poets, playwrights, editors, essayists, novelists (EAIO)

Pacific Exchange Network - Marine science

Parenteral and Enteral Nutrition - Gastroenterology (DAVI)

Peace Education Network (EA)

PEN American Center (EA)

Penang - Malaysia - Airport symbol (OAG)

Pendeli - Greece - Geomagnetic observatory code

Pendleton, OR - Amtrak Busline code

Penesak - Language code (ETLW)

Penetration (AFM)

Penguin - NCIC firearms make code (NCIC)

Penicillin - Antibiotic

Peninsula - GeoNet geographic features code (GEON)

Peninsula - Maps and charts

Peninsula Airways, Inc. - ICAO designator (FAAC)

Peninsula Environmental Network (SAUS)

Penitent

Penitentiary (WDAA)

Penn National - Horse racing entrants (HRTC)

Pensacola - Florida - Seismograph station code, US Geological Survey - Closed (SEIS)

Pentazocine - An analgesic

Pentegra Dental Group - AMEX symbol (SPSG)

Pentobarbital - Sedative

Pentode (DEN)

Permanent Entry Number - Computer science

Pharmacology Equivalent Name

Pharmacy Equivalent Name - Medicine (DMAA)

Physicians Education Network (EA)

Plasma-Enhanced silicon Nitride (SAUS)

Polyethylene Naphthalate - Organic chemistry

Professional Enrichment News - Portuguese (BJA)

Program Element Number - Computer science (KSC)

Program Error Note - Computer science

Protection Earth Neutral (SAUS)

Public Education Network (SAUS)

Public Electronic Network - Information service or system (IID)

Purchasing Electronic Notebook (HGAA)