1. Primula auricula yellow-flowered primrose native to Alps; commonly cultivated
  2. extracurricular outside the regular academic course of studies
  3. superior colliculus an essential visual center between the retina and the striate cortex
  4. curriculum an integrated course of academic studies
  5. Auricularia auricula widely distributed edible fungus shaped like a human ear and growing on decaying wood
  6. capricious determined by chance or impulse rather than by necessity
  7. inferior colliculus an essential auditory center in the midbrain
  8. order Agaricales typical gilled mushrooms belonging to the subdivision Basidiomycota
  9. primary coil coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit
  10. primary quill one of the main flight feathers projecting along the outer edge of a bird's wing
  11. primordial having existed from the beginning
  12. primary care the medical care received on first contact with the medical system (before being referred elsewhere)
  13. primary colour any of three colors from which all others can be obtained by mixing
  14. primary color any of three colors from which all others can be obtained by mixing
  15. primary school a school for young children; usually the first 6 or 8 grades
  16. atrioventricular relating to or affecting the atria and ventricles of the heart
  17. Mordecai Richler Canadian novelist (born in 1931)
  18. operculum a hard flap serving as a cover for (a) the gill slits in fishes or (b) the opening of the shell in certain gastropods when the body is retracted
  19. typewriter carriage a carriage for carrying a sheet of paper
  20. order Auriculariales coextensive with the family Auriculariaceae

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