CRYPTOGRAPHY
Meaning of CRYPTOGRAPHY in English
cryp ‧ tog ‧ ra ‧ phy /krɪpˈtɒɡrəfi $ -ˈtɑː-/ BrE AmE noun [uncountable]
the study of secret writing and ↑ code s
—cryptographer noun [countable]
Longman Dictionary of Contemporary English.
Longman - Словарь современного английского языка.
2012