What does focal calcification of the ovary mean? with no other abnormality. i've read about it, but i need more understanding?

Focal calcifications are quite common in neoplastic and non-neoplastic diseases of the ovary. They are usually associated with serous tumor, mucinous tumor, dermoid tumor, fibroma, thecoma, and gonadoblastoma. Other ovarian non-neoplastic diseases such as torsion, infarction, and hypoplasia may be associated with ovarian calcification. Talk to your Gyn for info specific to your case.

The short answer is that is probably means very little. Calcifications in the ovary are not at all unusual, and are not associated with cancers (in the same way that we worry about calcifications in the breast). You can treat that scan result as essentially normal.