| OROGENS | • orogens n. Plural of orogen. • OROGEN n. an orogenic belt, a mountain-forming area. |
| ACROGENS | • acrogens n. Plural of acrogen. • ACROGEN n. a cryptogam with a distinct permanent stem; a fern, a moss. |
| KEROGENS | • kerogens n. Plural of kerogen. • KEROGEN n. a kind of bitumen found in oil shale. |
| PYROGENS | • pyrogens n. Plural of pyrogen. • PYROGEN n. a substance that produces fever. |
| ANDROGENS | • androgens n. Plural of androgen. • ANDROGEN n. a male sex hormone. |
| ESTROGENS | • estrogens n. Plural of estrogen. • ESTROGEN n. a female sex-hormone, also OESTROGEN. |
| HYDROGENS | • hydrogens n. Plural of hydrogen. • HYDROGEN n. a gaseous element. |
| NITROGENS | • nitrogens n. Plural of nitrogen. • NITROGEN n. a gaseous element. |
| GOITROGENS | • goitrogens n. Plural of goitrogen. • GOITROGEN n. a substance (such as thiourea or thiouracil) that induces goiter formation. |
| OESTROGENS | • oestrogens n. Plural of oestrogen. • œstrogens n. Plural of œstrogen. • OESTROGEN n. a female sex-hormone, also ESTROGEN. |
| ELECTROGENS | • ELECTROGEN n. a molecule which emits electrons when it is illuminated. |
| CALYPTROGENS | • calyptrogens n. Plural of calyptrogen. • CALYPTROGEN n. the layer of cells on the growing tip of a root giving rise to the root cap. |
| OXYHYDROGENS | • OXYHYDROGEN n. a mixture of hydrogen and oxygen used to provide an intense flame for welding. |
| ANTIANDROGENS | • antiandrogens n. Plural of antiandrogen. • ANTIANDROGEN n. a substance that tends to inhibit the production, activity, or effects of a male sex hormone. |
| ANTIESTROGENS | • antiestrogens n. Plural of antiestrogen. • ANTIESTROGEN n. a drug designed to counter the effects of estrogen. |
| ANTIHYDROGENS | • antihydrogens n. Plural of antihydrogen. • ANTIHYDROGEN n. an antimatter form of hydrogen. |
| PARAHYDROGENS | • PARAHYDROGEN n. a spin isomer of hydrogen. |
| ANTIOESTROGENS | • antioestrogens n. Plural of antioestrogen. • ANTIOESTROGEN n. a drug that inhibits the activity of oestrogens. |
| ORTHOHYDROGENS | • orthohydrogens n. Plural of orthohydrogen. • ORTHOHYDROGEN n. the form of molecular hydrogen, constituting about 75 per cent of the total at normal temperatures, in which the nuclei of the atoms spin in the same direction. |
| PHYTOESTROGENS | • phytoestrogens n. Plural of phytoestrogen. • PHYTOESTROGEN n. a plant substance similar to a weak oestrogen. |