1. (cosmology) the theory that the universe maintains a constant average density with matter created to fill the void left by galaxies that are receding from each other
   - steady state theory

Type of: scientific theory

• genus Zoarces
• genus Zoisia
• genus Zonotrichia
• genus Zostera
• genus Zoysia
• genus Zygnema
• genus Zygocactus
• genus Zygophyllum
• genus-Fenusa
• genus-Megapodius
• genus-Milvus
• Genyonemus
• Genyonemus lineatus
• Genève
• geo-
• geocaching
• geocentric
• geocentric parallax
• geocentrically
• Geochelone
• geochemistry
• geochronology
• Geococcyx
• Geococcyx californianus
• geode