Unfruitful; unproductive; not fertile.Barren; not reproducing its kind.In botany, of a flower, producing only stamensāthat is, staminate or male (compare neutral); of a stamen, having no anther, or a functionless one; of an anther, without pollen; of an ovary, without perfect seeds; of a seed, without an embryo; of a frond, without sori. See cuts under Onoclea, Ophioglossum, sassafras, and smoke-tree.Free from living germs.Leading to no results; fruitless; profitless; useless.Lacking richness of thought or expression; bald; bare: as, a sterile style; sterile verse.