"Diagonal" begins with the prefix dia.
Diagonal, diachrome. diaphraghm...
di means two
Diametric, diagonal, diameter.
Words that begin with the prefix "ie" include "ielectric," "iefficient," and "iempower."
The prefix dia- means across or through. This is common word with this prefix: diameter.
incredible
insert
outside
Some words are:OfficeOfficiencyOffensiveOffenseOf
The prefix dia- means through or across. A common word for this is diameter.
carnivorous
hexagon
Syllable
microscope