There are 2 definitions of PDA in English:

PDA1

Syllabification: PDA

noun

A palmtop computer that functions as a personal organizer but also provides e-mail and Internet access.

Origin

1990s: abbreviation of personal digital assistant.

Definition of PDA in:

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Word of the day internecine
Pronunciation: ˌintərˈnesēn
adjective
destructive to both sides in a conflict

There are 2 definitions of PDA in English:

PDA2

Syllabification: PDA

abbreviation

informal Public display of affection.

Definition of PDA in: