1. large or extensive like the heavenly bodies.   abrasive   calorific   concentric   astronomical   Hint Half-n-half Clue   2. of exterior curvature or bulging outwards.   brackish   homogeneous   deducible   convex   Half-n-half Clue   3. secure or resistant to.   immune   calorific   anthropoid   horticultural   Half-n-half Clue   4. occurring at the same time.   concurrent   dorsal   homogeneous   ductile   Half-n-half Clue   5. grinding down or rubbing off.   abrasive   indeterminate   generic   abstract   Half-n-half Clue   6. concerned with nutrition.   impenetrable   determinate   alimentary   diffuse   Half-n-half Clue   7. diverse or mixed.   astral   eugenic   heterogenous   acrid   Half-n-half Clue