SI prefix
standardized prefix of the SI (Système International) for measurement units, indicating a multiple or fraction as a power of 10 or 1000
en-US/ˈsi ˈpɹifɪksn/
en-GB/ˈsiː ˌpɹiːˈfɪks/
standardized prefix of the SI (Système International) for measurement units, indicating a multiple or fraction as a power of 10 or 1000