Adjective
bi-endian (not comparable)
(computing) Supporting both big-endian and little-endian processing.
Instruction accesses (fetches of instruction words) on a given processor may still assume a fixed endianness, even if data accesses are fully bi-endian, though this is not always the case, such as on Intel's IA-64 -based Itanium CPU, which allows both. Source: Internet
The word bi-endian, when said of hardware, denotes the capability of the machine to compute or pass data in either endian format. Source: Internet
Note, too, that some nominally bi-endian CPUs require motherboard help to fully switch endianness. Source: Internet
There are also some bi-endian processors that operate in either little-endian or big-endian mode. Source: Internet