A History of Short Words

From the New York Times Crossword Puzzle

THETA

Thu, 12 Oct '23
Angle symbol, in trigonometry
Thu, 23 Feb '23
Symbol for an angle in math
Mon, 10 Jan '22
Letter before iota
Fri, 7 Jan '22
Letter in the Greek spelling of Athens
Sun, 21 Nov '21
Sorority letter
Sat, 7 Aug '21
Certain sorority member
Sun, 14 Feb '21
Eighth letter