exa-
1.
a combining form used in the names of units of measure equal to one quintillion (10
18
) of a given base unit:
exabyte.
Origin
probably ≪
Greek
exō-
outside, out of
British Dictionary definitions for
exa-
exa-
prefix
1.
denoting 10
18
:
exametres,
E
exa-
in Medicine
exa-
pref.
One quintillion (10
18
):
exagram.
exa-
in Technology
prefix