A History of Short Words

From the New York Times Crossword Puzzle

PIA

Thu, 29 Feb '24
___ mater (brain cover)
Sun, 28 Jan '24
Karachi-based carrier
Sat, 21 Oct '23
___ mater
Sun, 20 Aug '23
Italian novelist Pera
Sun, 25 Dec '22
Singer Zadora
Sun, 7 Mar '21
___ mater, membrane surrounding the brain
Sun, 21 Feb '21
Flag carrier to Karachi and Islamabad