A History of Short Words

From the New York Times Crossword Puzzle

HMO

Sun, 16 Jun '24
Insurance option, for short
Tue, 12 Dec '23
Med. plan choice
Sat, 22 Jul '23
Kaiser's grp.
Sun, 28 Aug '22
Medical plan inits.
Sun, 1 May '22
Med. care option
Wed, 17 Feb '21
Med. care option