Date: | 1800-1900 |

Origin: | From the name of the first letter of Greek periphereia 'distance around a circle' |

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pi [uncountable]

technicalHM a number that is represented by the Greek letter (π) and is equal to the distance around a circle, divided by its width

Definition of pi from the Longman Dictionary of Contemporary English within

the topic NUMBERS

the topic NUMBERS

add
addition
bi-
billion
calculate
constant
D
demi-
division
eight
eleven
equal(a)
equal(v)
even
factor(n)
factor(v)
fifth
fig.
figure
five
four
fourth
gross
hundred
L
M
million
multiple
-nd
negative
nine
No.
nos.
number
O
one
pi
plot
point
positive
product
-rd
root
round
score
second
set
six
square(n)
square(v)
-st
sum
take
ten
thousand
three
tri-
twenty
twice
unit
V
X
zero

Show all entries from Topic: NUMBERS

Show all entries from Topic: NUMBERS