Definitions containing the term f layer

What does f layer mean?

SSL	Secure Sockets Layer Computing » Drivers
SSL	Secure Sockets Layer Computing » Telecom
SSL	Secure Sockets Layer Computing » General
SSL	Secure Sockets Layer Computing » Security
SSL	Secure Sockets Layer Computing » Software
SSL	Secure Sockets Layer Academic & Science » Electronics
TLS	Transport Layer Security Computing » Security
TLS	Transport Layer Security Computing » Networking
SDL	Simple DirectMedia Layer Computing » Networking
HAL	Hardware Abstraction Layer Computing » General
HAL	Hardware Abstraction Layer Computing » Drivers
L2TP	Layer 2 Tunneling Protocol Computing » Networking
L2TP	Layer 2 Tunneling Protocol Computing » General
ALD	Atomic Layer Deposition Academic & Science » Electronics
AAL	ATM Adaptation Layer Computing » Networking
WTLS	Wireless Transport Layer Security Computing » Networking
AAL5	ATM (Asynchronous Transmission Mode) Adaptation Layer 5 Computing » Telecom
AAL5	ATM Adaptation Layer 5 Computing » General
L2F	Layer 2 Forwarding protocol Computing » Telecom
L2F	Layer 2 Forwarding protocol Computing » Networking
SASL	Simple Authentication And Security Layer Miscellaneous » Unclassified
OIL	Ontology Inference Layer Computing » Networking
HVL	Half Value Layer Academic & Science » Ocean Science
HVL	Half Value Layer Academic & Science » Physics
TLI	Transport Layer Interface Computing » Networking

F layer(n.): the highest radio-reflective region of the ionosphere, at an altitude of ab. 80 mi. (130 km).