What does "gibibyte" mean?

Strictly, 2³⁰ (1024³, or 1,073,741,824) bytes or 2¹⁰ (1024) mebibytes, as opposed to a gigabyte.

What is a synonym for "gibibyte"?

Common synonyms include: gib, binary gigabyte, binary prefix, g, gb, gigabyte.

Pronounced //ˈɡɪbɪˌbaɪt//.

/ˈɡɪbɪˌbaɪt/ noun

noun ·Rare ·Advanced level

Noun

1
Strictly, 2³⁰ (1024³, or 1,073,741,824) bytes or 2¹⁰ (1024) mebibytes, as opposed to a gigabyte.
"In the example above, it appears that using gigabytes inflates the drive capacity by well over one gigabyte (or gibibyte—take your pick)."
2
a unit of information equal to 1024 mebibytes or 2^30 (1,073,741,824) bytes wordnet

"In the example above, it appears that using gigabytes inflates the drive capacity by well over one gigabyte (or gibibyte—take your pick)."

From gibi- + byte.