1. formal discourse or essay.   fauna   cistern   conduit   dissertation   Hint Half-n-half Clue   2. drug or treatment preventing infection.   aperture   gyroscope   antiseptic   balm   Half-n-half Clue   3. floating sheet of ice.   homeostasis   floe   aperture   flux   Half-n-half Clue   4. ability to produce desired effect.   efficacy   equilibrium   constraint   foliage   Half-n-half Clue   5. lizard noted for changing color to surroundings.   chameleon   correlation   aureole   flora   Half-n-half Clue   6. state of being motionless.   fauna   immobility   balm   dissertation   Half-n-half Clue   7. post-mortem or examination of dead body.   dichotomy   autopsy   conjecture   flora   Half-n-half Clue