cryptonym
Noun
Meaning
A secret name; a name by which a person is known only to the initiated.
Source: Webster's dictionarySynonyms
Examples
In this case, the basic cryptonym, e.g., LICOZY, will designate the whole group, while each group member is designated by a sequence number, e.g., LICOZY/3, which can also be written LICOZY-3, or just L-3.
Examples from publications by former CIA personnel show that the terms "code name" and "cryptonym" can refer to the names of operations as well as to individual persons.
Pedlow and Welzenbach 1992, pp. 59–62, 66. The CIA assigned the cryptonym "Aquatone" to the project, with the USAF using the name "Oilstone" for their support to the CIA.
The U.S. intelligence community uses many code names (see, for example, CIA cryptonym ).