If you mean the wikipedia definition of compiling source code to machine code at runtime, then no. The Tcl interpreter contains a bytecode virtual machine, more along the Java model.
Source code is converted to bytecode on the procedure level, not the program level, so there's no program-wide checks for consistency. It's done at runtime.
There are some officially unsupported tools built in to the interpreter that let you dump bytecode of compiled procedures and reload it. You'd have to roll your own dumping and loading scripts if you wanted to deliver an entire program using those tools.
