There are 2 definitions of ps in English:

ps1

Syllabification: ps

abbreviation

Picosecond(s).

Definition of ps in:

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Word of the day humoresque
Pronunciation: ˌ(h)yo͞oməˈresk
noun
a short, lively piece of music

There are 2 definitions of ps in English:

PS2

Syllabification: PS

abbreviation

1Passenger steamer.
1.1Permanent secretary.
1.2Police sergeant.
1.3Postscript.
1.4Private secretary.
1.5Privy Seal.
1.6 Theater Prompt side.
1.7Public School.

Definition of ps in: