| ASTROSPHERES | • astrospheres n. Plural of astrosphere. • ASTROSPHERE n. another name for a centrosome. |
| BATHYSPHERES | • bathyspheres n. Plural of bathysphere. • BATHYSPHERE n. a submersible observation chamber. |
| BLOGOSPHERES | • blogospheres n. Plural of blogosphere. • BLOGOSPHERE n. the part of the World Wide Web that contains weblogs. |
| CHEMOSPHERES | • chemospheres n. Plural of chemosphere. • CHEMOSPHERE n. the thermosphere, the outermost layer of the atmosphere. |
| COSMOSPHERES | • cosmospheres n. Plural of cosmosphere. • COSMOSPHERE n. an apparatus for showing the position of the earth at any given time with reference to the fixed stars. |
| HELIOSPHERES | • heliospheres n. Plural of heliosphere. • HELIOSPHERE n. the region in space influenced by the sun or solar wind. |
| HERESTHETICS | • HERESTHETIC n. the art of political manipulation, esp. by the use of language. |
| HYDROSPHERES | • hydrospheres n. Plural of hydrosphere. • HYDROSPHERE n. the water of the earth. |
| ISODIAPHERES | • ISODIAPHERE n. one of two or more nuclides with the same difference between the totals of neutrons and protons. |
| LITHOSPHERES | • lithospheres n. Plural of lithosphere. • LITHOSPHERE n. the solid outer portion of the Earth consisting of the crust and upper mantle, approximately 100 km (62 miles) thick. |
| MICROSPHERES | • microspheres n. Plural of microsphere. • MICROSPHERE n. a small sphere. |
| OZONOSPHERES | • ozonospheres n. Plural of ozonosphere. • OZONOSPHERE n. the ozone layer. |
| PANTHERESSES | • pantheresses n. Plural of pantheress. • PANTHERESS n. a female panther. |
| PHOTOSPHERES | • photospheres n. Plural of photosphere. • PHOTOSPHERE n. the sun's luminous envelope. |
| PLANISPHERES | • planispheres n. Plural of planisphere. • PLANISPHERE n. a sphere projected onto a plane; a map of the heavens. |
| RHIZOSPHERES | • rhizospheres n. Plural of rhizosphere. • RHIZOSPHERE n. a region of increased biological activity in the neighborhood of a root. |
| TITANOTHERES | • titanotheres n. Plural of titanothere. • TITANOTHERE n. any of various very large extinct horselike perissodactyl mammals. |
| TROPOSPHERES | • tropospheres n. Plural of troposphere. • TROPOSPHERE n. a region of the atmosphere from 25,000 feet to 55,000 feet, the boundary between the upper troposphere and the lower stratosphere. |