1. necessitarian someone who does not believe the doctrine of free will
  2. necessitous poor enough to need help from others
  3. genus Strepera bell magpies
  4. necessary absolutely essential
  5. obstreperous noisily and stubbornly defiant
  6. genus Staurikosaurus primitive ornithischian dinosaur found in Brazil
  7. genus Ostryopsis deciduous monoecious shrubs of China and Mongolia resembling trees of the genus Ostrya; sometimes placed in subfamily or family Carpinaceae
  8. genus Lastreopsis tropical terrestrial shield ferns
  9. genus Strepsiceros African antelopes: kudus; bongos; nyalas; bushbucks
  10. genus Styracosaurus genus of horned dinosaurs
  11. Pinus strobus tall-growing pine of eastern North America
  12. necessitate require as useful, just, or proper
  13. nose drops street names for heroin
  14. genus Citroncirus a cross between Citrus sinensis and Poncirus trifoliata
  15. disastrous having extremely unfortunate or dire consequences
  16. genus Centropus a genus of Cuculidae
  17. necessity the condition of being essential or indispensable
  18. genus Pteropus a genus of Megachiroptera
  19. genus Strombus type genus of the family Strombidae
  20. genus Etropus a genus of Bothidae