axial area मीनिंग इन हिंदी

Older corals have a large axial area with the cardinal fossula and projecting septa at their edges, making them appear like a " toothed wheel ".
In mature specimens, the fossula has almost disappeared and the top axial area is smooth and wide with septa that project slightly starting outside this area, and continuing almost to the basal peduncle, which is small.