1. os sphenoidale butterfly-shaped bone at the base of the skull
  2. definitely without question and beyond doubt
  3. Isospondyli most primitive teleost fishes
  4. spheroidal having the nature or shape of an ellipsoid
  5. os frontale the large cranial bone forming the front part of the cranium: includes the upper part of the orbits
  6. assassinate murder; especially of socially prominent persons
  7. US Senate the upper house of the United States Congress
  8. sphenoid butterfly-shaped bone at the base of the skull
  9. asystole absence of systole
  10. infantile of or relating to babies
  11. observantly in an observant manner
  12. indefinitely to an unknown extent
  13. eventually after an unspecified period of time or a long delay
  14. adenoidal of or pertaining to the adenoids
  15. aspherical varying slightly from a perfectly spherical shape
  16. eventual expected to follow in the indefinite future
  17. asteroidal of or relating to or resembling an asteroid
  18. isocyanate a salt or ester of isocyanic acid
  19. genus Sphenodon coextensive with the order Rhynchocephalia: tuataras
  20. jus civile the legal code of ancient Rome