What is the meaning of Apo-?

Lacking, without, scant.

An apoenzyme: an enzyme without its cofactor; associated apoproteins.

Lacking a metallic unit.

Not, opposite.

Away from, outward, or apart in direction.

Removal, amputation.

Disjoint, separate.

Different, distinct.

Exterior, outside of.

From, coming from.

Derived from, or related to.

Distant, far from, or apart in position.

Furthest in position

Apoapsis: the point of a body's elliptical orbit about the system's centre of mass where the distance between the body and the centre of mass is at its maximum.

To carry forth, to do.

apo-

apo-

apo-

apo- (all senses)

apo-

apo-, away

apo- (away from; separate)

apo- (without; lacking)

apo- (derived from, or related to)

apo- (the apoprotein form of the protein)

Source: wiktionary.org