p.d.

1. per diem.

2. potential difference.

* * *

pd.,

paid.

p.d.,

1. per diem.

2. potential difference.

Pd (no period),

palladium (chemical element).

P.D.,

1. per diem.

2. Police Department.

3. Postal District.

4. Public Defender.

* * *

abbr.

■ per diem

■ potential difference