1. substance producing condition of no sensation.   homeostasis   eddy   anesthetic   dichotomy   Hint Half-n-half Clue   2. defect in eye or lens preventing proper focusing.   fauna   cataract   foliage   astigmatism   Half-n-half Clue   3. drug that reduces pain.   floe   anodyne   cartographer   conjecture   Half-n-half Clue   4. correspondence or harmonious relation.   congruence   cistern   equinox   effluvium   Half-n-half Clue   5. compulsion or repression.   flora   asteroid   constraint   dissection   Half-n-half Clue   6. division into two classes.   fulcrum   cistern   homeostasis   dichotomy   Half-n-half Clue   7. united mass or coalition.   fusion   atrophy   imbalance   extrapolation   Half-n-half Clue