dia through, across Prefix:

Diagram Picture drawn to explain an idea On the test we had to draw a diagram to label the different muscles of the arm.

Diagnose To identify a disease through symptoms.

Diagonal A straight line through a figure from one corner to another corner. Diagonal Line

Diaphanous Transparent, capable of being seen through. Diaphanous boat Diaphanous piggy bank Diaphanous backpack

Diaphragm A membrane that separates one thing from another, such as the chest cavity and the abdominal cavity.

Per through, across Prefix:

Perambulate To walk through, over or around The herd perambulated the area, crossing it several times in search of food.

Percolate To drip through a small opening or to filter a liquid The tap water percolated through the water filter.

Perforate To make holes in something The perforated tickets were easy to tear apart.

Persistence Continuing stubbornly without giving up; determination His persistence in the soccer game paid off, he finally scored a goal!

Pervasive Having the power to be spread or to pass through The feeling of joy was pervasive, spreading throughout the whole group on the first day of summer break!