1. metallurgical   iridescent or displaying rainbow-like colors.   pertaining to the abdomen.   pertaining to extracting and processing metals.   muddy or not clear.   Hint Half-n-half Clue   2. omnivorous   devouring all food; not fastidious.   pertaining to the earth.   pertaining to the stars.   at the same time or simultaneous.   Half-n-half Clue   3. porous   permeable or having pores.   pertaining to the lungs.   muddy or not clear.   caustic or sharp in taste or smell.   Half-n-half Clue   4. transient   pertaining to extracting and processing metals.   for a short time or momentary.   shaped like an egg.   capable of being shaped by hammering or pliable.   Half-n-half Clue   5. tertiary   pertaining to theory; not practical or applied.   of the third kind.   used as preventive for spread of disease.   muddy or not clear.   Half-n-half Clue   6. spatial   supefluous or excessive.   pertaining to space.   marked with ridges or parallel grooves on surface.   devouring all food; not fastidious.   Half-n-half Clue   7. oblique   pertaining to extracting and processing metals.   pertaining to night.   slanting or indirect.   pertaining to the stars.   Half-n-half Clue