psi
/ˈsaɪ/
noun
Familiar
1.n.a unit of pressure
2.n.the 23rd letter of the Greek alphabet
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psi and sigh are homophones: they are pronounced identically and spelled differently, which is why they are so often swapped. psi means “a unit of pressure”. sigh means “an utterance made by exhaling audibly”. sigh is the more common of the two in everyday English.
/ˈsaɪ/
1.n.a unit of pressure
2.n.the 23rd letter of the Greek alphabet
/ˈsaɪ/
1.
| psi | sigh | |
|---|---|---|
| Pronunciation | /ˈsaɪ/ | /ˈsaɪ/ |
| Said | sahy | sahy |
| Syllables | 1 | 1 |
| Letters | 3 | 4 |
| Parts of speech | noun | noun, verb |
| Senses | 2 | 4 |
| How common | Familiar | Common |
| Synonyms | pounds per square inch | suspiration |
2.n.a sound like a person sighing
“she heard the sigh of the wind in the trees”
3.v.heave or utter a sigh; breathe deeply and heavily
“She sighed sadly”