What does PISO stand for?

No Pilot Balloon Observation Due to Snow - Meteorology (FAAC)

Parallel-In Serial-Out - Telecommunications (TEL)

Philippines Investment Systems Organization (SAUS)

Pinus sondereggeri H. H. Chapman - Scientific name - Family: Pinaceae - USDA National Plant Data Center symbol - Botany - Taxonomy (USDA)

Polyimidesulfone (SAUS)