SI prefix
standardized prefix of the SI (Système International) for measurement units, indicating a multiple or fraction as a power of 10 or 1000
peta
prefix denoting 1000000000000000 (10^15) (which indicates 10 to the 15th power) that was made by SI in 1975
mega
prefix denoting 1000000 (indicating 10 to the 6th power)
deci
prefix denoting 10 to the −1st power
exa
prefix denoting 10 to the 18th power
ronna
SI prefix equal to 10²⁷ (octillion short scale)
micro
prefix for measurement unit symbols, denoting a multiple of 10 to the −6th power
nano
prefix denoting 10 to the −9th power
demi-
prefix in multiple languages
kilo-
prefix for physical units indicating multiplication by 1000
milli
multiplier prefix denoting 10 to the −3rd power
pico
prefix denoting 10 to the −12th power
centi
prefix denoting 10 to the −2nd power
null morpheme
morpheme whose realization is not reflected in pronunciation or orthography