1. ceteris paribus all other things being equal
  2. Citrus paradisi citrus tree bearing large round edible fruit having a thick yellow rind and juicy somewhat acid pulp
  3. heterosporous characterized by heterospory
  4. Astreus pteridis the largest earthstar
  5. star sapphire a sapphire that when cut shows a starlike figure in reflected light because of its crystalline structure
  6. Ptloris paradisea velvety black Australian bird of paradise with green and purple iridescence on head and tail
  7. arthrosporous of or relating to arthrospores
  8. center spread the spread at the center of a magazine
  9. Heterostraci extinct group of armored jawless fishes or fish-like vertebrate; taxonomy is not clear
  10. Pterospermum genus of tropical Asian trees and shrubs
  11. water spirit a fairy that inhabits water
  12. water sprite aquatic fern of tropical America often used in aquariums
  13. heterospory the development of both microspores and megaspores
  14. Citrus bergamia small tree with pear-shaped fruit whose oil is used in perfumery; Italy
  15. cross-purpose a contrary aim
  16. mother superior the superior of a group of nuns
  17. Dianthus supurbus Eurasian perennial pink having fragrant lilac or rose flowers with deeply fringed margins
  18. water sapphire a deep blue cordierite often used as a gemstone
  19. Strasbourg city on the Rhine in eastern France near the German border
  20. Strassburg city on the Rhine in eastern France near the German border

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