Deutero is defined as second or secondary.
An example of deutero is deuteropathy which is a disease that happens secondary to another.
second, secondary: deuterogamy
Origin of deutero-from Classical Greek deuteros, second, origin, originally , farther from, a comparative form from base of deuein, dialect, dialectal var of dein, to lack, be far from from Indo-European base an unverified form deu-, to move away, distance from source Sanskrit d?ráh, remote, Classical Latin durare, to last
Second; secondary: deuterocanonical.
Origin of deutero-Greek deuteros second, secondary ; see deu-1 in Indo-European roots.