noun.
An element in many compound words of Greek origin, meaning man, and hence masculine, male; especially, in botany (also terminally, -androus, -ander, -andria), with reference to the male organs or stamens of a flower. See -androus.
"Some experts say andro is sold over the counter because it gets through the government regulations as a dietary supplement on a loophole, that its molecular structure is just like steroids."