What does "sigint" mean?

Abbreviation of signals intelligence.

What is a synonym for "sigint"?

Common synonyms include: signals intelligence.

/ˈsɪɡ.ɪnt/ noun

noun ·Rare ·Advanced level

Noun

1
Abbreviation of signals intelligence. abbreviation, alt-of, uncountable
"(a) Intelligence.—This includes SIGINT, ELINT and their Electronic countermeasures (ECM, ECCM, ECCCM and so on)."
2
Alternative letter-case form of SIGINT. alt-of, countable, uncountable
"We have had a long history of Mossadniks and others speaking out, this is a first for the sigint service to my knowledge."
3
intelligence information gathered from communications intelligence or electronics intelligence or telemetry intelligence wordnet
4
An Earth-orbiting satellite used to intercept signals. countable
5
A signal sent to a process by its controlling terminal when a user wishes to interrupt the process. countable, uncountable

"(a) Intelligence.—This includes SIGINT, ELINT and their Electronic countermeasures (ECM, ECCM, ECCCM and so on)."

Blend of signal + intelligence.