1. natural environment; nutrient setting for microorganism.   log   precipitant   repulsion   medium   Hint Half-n-half Clue   2. universal remedy or cure-all.   prototype   panacea   vortex   satellite   Half-n-half Clue   3. array of numbers or symbols; mold or die.   matrix   parasite   log   patina   Half-n-half Clue   4. target or goal.   objective   quadruped   lumen   repulsion   Half-n-half Clue   5. missile or shell.   vertex   projectile   trough   virus   Half-n-half Clue   6. optical illusion due to atmospheric conditions.   nutrient   pigment   mirage   refraction   Half-n-half Clue   7. size or extent.   increment   pachyderm   momentum   magnitude   Half-n-half Clue