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MILLI (SYMBOL M) IS A SI PREFIX IN THE SI SYSTEM OF UNITS DENOTING A FACTOR OF 10-3, OR 1/1,000.
ADOPTED IN 1795, THE PREFIX COMES FROM THE LATIN MILLE, MEANING ONE THOUSAND (THE PLURAL IS MILIA).
SI PREFIXES
10N
PREFIX
SYMBOL
SHORT SCALE
LONG SCALE
DECIMAL EQUIVALENT
1024
YOTTA
Y
SEPTILLION
QUADRILLION
1 000 000 000 000 000 000 000 000
1021
ZETTA
Z
SEXTILLION
TRILLIARD (THOUSAND TRILLION)
1 000 000 000 000 000 000 000
1018
EXA
E
QUINTILLION
TRILLION
1 000 000 000 000 000 000
1015
PETA
P
QUADRILLION
BILLIARD (THOUSAND BILLION)
1 000 000 000 000 000
1012
TERA
T
TRILLION
BILLION
1 000 000 000 000
109
GIGA
G
BILLION
MILLIARD (THOUSAND MILLION)
1 000 000 000
106
MEGA
M
MILLION
1 000 000
103
KILO
K
THOUSAND
1 000
102
HECTO
H
HUNDRED
100
101
DECA, DEKA
DA
TEN
10
100
NONE
NONE
ONE
1
10−1
DECI
D
TENTH
0.1
10−2
CENTI
C
HUNDREDTH
0.01
10−3
MILLI
M
THOUSANDTH
0.001
10−6
MICRO
µ
MILLIONTH
0.000 001
10−9
NANO
N
BILLIONTH
MILLIARDTH
0.000 000 001
10−12
PICO
P
TRILLIONTH
BILLIONTH
0.000 000 000 001
10−15
FEMTO
F
QUADRILLIONTH
BILLIARDTH
0.000 000 000 000 001
10−18
ATTO
A
QUINTILLIONTH
TRILLIONTH
0.000 000 000 000 000 001
10−21
ZEPTO
Z
SEXTILLIONTH
TRILLIARDTH
0.000 000 000 000 000 000 001
10−24
YOCTO
Y
SEPTILLIONTH
QUADRILLIONTH
0.000 000 000 000 000 000 000 001
[EDIT]
SEE ALSO
SI
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