What the description can mean
It may refer to a dilated chamber, a thickened wall, or an appearance on a chest film that needs a clearer look with echocardiography. Possible contributors include long-standing high blood pressure, valve disease, weakened muscle, or athletic remodeling in some people.
An article cannot say which of those applies to you.
The role of echocardiography
Echo helps measure chambers, wall thickness, pumping function, and valves. That is why it is often requested after another test mentions enlargement.
A practical next step
If you received a report with this wording, bring it to a consultation instead of hunting for a final meaning online. Interpretation depends on the full measurements and the clinical picture.