Reading data object in one transaction after comitting data object in another transaction - dirty read?

Question

By definition, a dirty read is a read of uncommitted data. My question is:

If you have several writes from different transactions in the same story happening right after each other (lets say transaction 1, 2 and 3), then at the end of the writes, one of the transactions commits (lets say it was transaction 1), followed by a read from transaction 2 or 3, does this count as a dirty read?

Ex: w1(X);w2(X);w3(X);c1;r2(X).....

Answer 1

No, the term for these is nonrepeatable reads or phantom reads (source). They are allowed by default in many (if not most) database engines.