By this definition, every access to a shared resource is a race condition, e.g. even when properly acquiring a lock. It is common knowledge that you introduce locks to remove race conditions so I would say something is definitely missing from the definition.
That is a valid definition but it's not the one used by everyone I know and work with. A race condition is a fault, just like a SQL injection; it could easily have referred to a programming technique but it doesn't.
