1. Of or belonging to astronauts or the science of astronautics
   - astronautic

See also: astronaut, astronautics

• Sphecius
• Sphecius speciosis
• sphecoid
• sphecoid wasp
• Sphecoidea
• Sphecotheres
• sphene
• sphenion
• Spheniscidae
• sphenisciform seabird
• Sphenisciformes
• Spheniscus
• Spheniscus demersus
• Sphenodon
• Sphenodon punctatum
• sphenoid
• sphenoid bone
• sphenoid fontanel
• sphenoid fontanelle
• sphenoidal
• sphenoidal fontanel
• sphenoidal fontanelle
• Sphenopsida
• spheral
• sphere