Translingual

Symbol

Pm

1. (chemistry) Symbol for promethium.
2. (metrology) Symbol for the petameter (petametre), an SI unit of length equal to 10¹⁵ meters (metres).

Translingual

Symbol

pm

1. (metrology) Symbol for the picometer (picometre), an SI unit of length equal to 10⁻¹² meters (metres).

English

Abbreviation

pm

1. Alternative form of p.m.

Spanish

Adverb

pm

1. p.m. (after noon)

Antonyms

• am