Also known as: im., IM()
IM stands for various terms. Discover the full forms, meanings, and possible interpretations of IM across different fields and industries.
Located at the beginning (threshold) of the runway on some ILS approach systems (usually Category II and III) having decision heights of less than 200 feet (60 m) AGL..
AviationGovernmental & MilitaryNOTAM ContractionsTransportationA process whereby signals mix together in a circuit and nonlinearities in the circuit create undesired output frequencies that are not present at the input. Or The amplitude modulation of signals containg two or more frequencies due t nonlinearities in systems.
Federal Aviation AdministrationGovernmental & MilitaryNASAOther instant messaging programs such as Yahoo! Messenger and Live (MSN) Messenger.
Governmental & MilitarySecurityLast updated: