magic number
マジックナンバー
magic string
File format § Magic number
List of file signatures
FourCC
Hard coding
Magic (programming)
NaN (Not a Number)
Enumerated type
Hexspeak, for another set of magic values
Nothing up my sleeve number about magic constants in cryptographic algorithms
Time formatting and storage bugs, for problems that can be caused by magics
Sentinel value (aka flag value, trip value, rogue value, signal value, dummy data)
Canary value, special value to detect buffer overflows
XYZZY (magic word)
Fast inverse square root, using the constant 0x5F3759DF
#Programming-anti-patterns
/suto3/google.iconmagic number
image magic number
define magic number
wikipedia magic number
weblio magic number
kotobank magic number
jisho magic number