PSI

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does psi mean? 

• PSI (noun)
  The noun PSI has 2 senses:

1. a unit of pressure

2. the 23rd letter of the Greek alphabet

  Familiarity information: PSI used as a noun is rare.

 Dictionary entry details 

• PSI (noun)

Sense 1

Meaning:

A unit of pressure

Classified under:

Nouns denoting quantities and units of measure

Synonyms:

pounds per square inch; psi

Hypernyms ("psi" is a kind of...):

pressure unit (a unit measuring force per unit area)

Sense 2

Meaning:

The 23rd letter of the Greek alphabet

Classified under:

Nouns denoting communicative processes and contents

Hypernyms ("psi" is a kind of...):

alphabetic character; letter; letter of the alphabet (the conventional characters of the alphabet used to represent speech)

Holonyms ("psi" is a member of...):

Greek alphabet (the alphabet used by ancient Greeks)