exa-(redirected from 1 E18)
Also found in: Dictionary, Encyclopedia.
word element used in naming units of measurement to designate a quantity 1018 (a quintillion, or million million million) times the unit to which it is joined. Symbol E.
Prefix used in the SI and metric system to signify a multiple of one quintillion (1018).
Prefix used in the SI and metric system to signify one quintillion (1018).