Definition of "PDA"

Despite the fast pace of innovation in PDAs, particularly this year, a number of standards have emerged allowing software makers the security needed to invest in developing extensive software for three platforms: the PalmPilot made by 3Com, the Psion Series 5 by Psion and Windows CE devices made by a group of companies including Philips, Sharp Electronics, Casio Corp. and Hewlett Packard Corp.

1998 November 16, Paul Floren, “Digital Assistants Get Sophisticated”, in International Herald Tribune‎

I was still pretty firmly anti-PDA, but when David kissed me—quickly, but firmly—I decided that every once in a while, it wasn’t so bad.

2015 April, Rachel Hawkins, chapter 7, in Miss Mayhem

Argh! Jail! I agree, but in-flight PDA while clothed isn’t illegal, although a man was convicted of a criminal offence in 2007, after arguing with cabin crew who tried to stop him and his girlfriend “embracing, kissing and acting in a manner that made other passengers uncomfortable”, according to the indictment.

2024 April 9, “In-flight canoodling: is it ever acceptable to spoon at 40,000ft?”, in The Guardian‎