This is the etymology given in the Collins English Dictionary.ref Collins The word which is widely believed to be the root and one of the ones quoted by the Oxford English Dictionary is .
exFAT is an improved version of FAT32. It isnât as efficient as NTFS (Windows) but is cross compatible between Windows OS and Mac OS (since 10.6.5), unlike NTFS and HFS+. I recommend using it when compatibility between Mac and Windows is important, at the (small) cost of efficiency (such as file size bloating, transfer speeds, general performance). exFAT is the preferred format for flash memory, used for media such as SD cards and SSD. Written Jun 22.
Formatting an SDXC card for use with NOOBS. According to the SD specifications, any SD card larger than 32GB is an SDXC card and has to be formatted with the exFAT filesystem. This means the official SD Formatter tool will always format cards that are 64GB or larger as exFAT. The Raspberry Pi's bootloader, built into the GPU and non-updateable, only has support for reading from FAT filesystems (both FAT16 and FAT32), and is unable to boot from an exFAT filesystem.