What does sf, sgle fr stand for?

sf, sgle fr stands for "single fronted"

How to abbreviate "single fronted"?

"single fronted" can be abbreviated as sf, sgle fr

What is the meaning of sf, sgle fr abbreviation?

The meaning of sf, sgle fr abbreviation is "single fronted"

What does sf, sgle fr mean?

sf, sgle fr as abbreviation means "single fronted"