The term 'PREFIX FOR PHYSICAL' can be solved by two crossword solutions: META (4 letters) and ASTRO (5 letters). META is a prefix derived from the Greek language meaning 'BEYOND, ' 'AFTER, ' or 'ABOVE.' It is commonly used in scientific terms to refer to something that is higher or more complex than the thing it is referring to. ASTRO is a prefix derived from the Greek language meaning 'STAR' or 'celestial body.' It is commonly used in scientific terms to refer to something related to astronomy or outer space.