di-, dicho-, dich-

(Greek: number two; twice, divided, double; unalike; a number used as a prefix)

diacanthous
Having two spines.
diacid
Capable of combining with two acid radicals.
diadelphous
A description of stamens or flowers that have the stamen filaments grouped into two bundles or groups.
dianthous
A condition of a flower that is pollinated from another flower of the same plant.
diarch
One of two rulers.
diarchy
diarchy, duarchy
A government by two rulers.
dibrachia
dicephalous
dicephaly
dicheilia
dicheria
dichogamous
dichogamy
dichogeny