Meaning Public display of affection
Type Acronym
Rank ★ ★ ★  Common
Usage General (not just online)
Comments Refers to hugging and kissing someone in public; should be kept to a minimum out of respect for innocent bystanders.
Updated February 14, 2013
Meaning Personal Digital Assistant
Type Acronym
Rank ★ ☆ ☆  Uncommon
Usage General (not just online)
Comments A PDA is a portable device used for jotting down notes and keeping track of contacts and schedules. Smartphones have made PDAs mostly obsolete.
Example "The Newton was a sophisticated PDA developed by Apple Computer."
Updated February 1, 2013