A History of Short Words

From the New York Times Crossword Puzzle

PSI

Wed, 17 Jul '24
Greek consonant hidden in the names of two Greek vowels
Thu, 18 Apr '24
Measure of inflation, in brief
Thu, 4 Apr '24
Pressure meas.
Thu, 25 Jan '24
Three-point letter you won't find in Scrabble?
Tue, 23 Jan '24
Greek letter shaped like a pitchfork
Mon, 20 Nov '23
Greek letter after chi
Tue, 26 Sep '23
Letter before omega
Sat, 22 Jul '23
Measure of inflation: Abbr.
Wed, 19 Apr '23
Inflation measure, in brief
Tue, 21 Mar '23
Penultimate Greek letter
Tue, 21 Feb '23
Next-to-last Greek letter
Fri, 9 Dec '22
Abbr. at a pump
Sun, 23 Oct '22
No. listed on the inside of car doors, often
Fri, 16 Sep '22
Wave function symbol
Thu, 4 Aug '22
Inflation spec
Mon, 4 Jul '22
This Greek letter: ?
Thu, 23 Jun '22
Letter resembling Indiana University's logo
Sun, 19 Jun '22
Three-pronged letter
Thu, 14 Apr '22
Pitchfork-shaped letter
Sun, 24 Oct '21
Trident look-alike
Sat, 29 May '21
Inflation stat, for short
Tue, 4 May '21
... phi, chi, ___, omega
Tue, 27 Apr '21
Letter before omega
Thu, 8 Apr '21
Inflation fig.