definition of RTL ..

[ABwag]

what is the definition of RTL? why the design what we see after the synthesis is call RTL?

 

[FvM]

What you see after synthesis is gate-level, not register-transfer level. See https://en.wikipedia.org/wiki/Register-transfer_level

RTL is an abstraction level used in circuit description, the most popular way to describe circuits intended for hardware synthesis.