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BNC: 17688 COCA: 15226

psi

1 ENTRIES FOUND:
psi abbreviation
psi
abbreviation
Learner's definition of PSI
pounds per square inch磅/平方英寸(胎压等的单位)
BNC: 17688 COCA: 15226
: the 23rd letter of the Greek alphabet see Alphabet Table

psi

2 of 3

noun (2)

: parapsychological psychic phenomena or powers

psi

3 of 3

abbreviation

pounds per square inch

Word History

Etymology

Noun (1)

Middle English, from Medieval Latin, from Late Greek, from Greek psei

Noun (2)

probably by shortening & alteration from psychic

First Known Use

Noun (1)

15th century, in the meaning defined above

Noun (2)

1942, in the meaning defined above

Time Traveler
The first known use of psi was in the 15th century
BNC: 17688 COCA: 15226

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