PIV explained

PIV may refer to:

Language

• Plena Ilustrita Vortaro de Esperanto, a dictionary of Esperanto
• Vaeakau-Taumako (ISO 639 language code), a Polynesian language

Science and technology

• Particle image velocimetry, an optical method of flow visualization
• Peak inverse voltage, in electronics
• Pentium 4 microprocessor, produced by Intel ("IV" is Roman numeral for "4")
• Personal Identity Verification, as specified by the US federal government standard FIPS 201
• Positive input ventilation, a type of ventilation for buildings
• Post indicator valve, a shut-off valve for otherwise underground pipes, notably for fire sprinklers; see Glossary of firefighting equipment#P
• Pivaloyl protecting group (Piv), a protecting group in chemistry

Medicine

• Parainfluenza virus, single-stranded RNA viruses belonging to the Paramyxoviridae family
• Peripheral intravenous catheter (PIVC), in medicine
• Posterior interventricular artery, an artery supplying the heart

Other uses

• Penis in vagina, a type of sexual intercourse