Not the GP, but... it has a specific meaning in the sciences: https://en.m.wikipedia.org/wiki/Femto- https://en.m.wikipedia.org/wiki/Femto- I'd imagine the ar

Not the GP, but... it has a specific meaning in the sciences: https://en.m.wikipedia.org/wiki/Femto- https://en.m.wikipedia.org/wiki/Femto- I'd imagine the argument against using it is that it's being used in a less precise way. Femtocell is a name commonly used for a consumer-level device to extend a cellular network. One could argue that use of femto should have some bearing on the radio being used.