Psc1
/ˌpiːɛsˈsiː/Astronomy
noun
The constellation Pisces. Chiefly as postpositive, in the designations of stars of this constellation.
Origin
1920s; earliest use found in Transactions of the International Astronomical Union. Shortened from Pisces, Piscium, originally as graphic abbreviation.
psc2
(also PSC)
noun
Passed staff college.
Origin
Late 19th century.