The term 'RESISTANCE UNITS' can be broken down into two crossword solutions: OHMS (4 letters) and PINT (4 letters). OHMS is a unit of electrical resistance, named after the German physicist Georg Ohm. It is denoted by the symbol Ω and is equal to the resistance between two points on a conductor when a constant potential difference of one volt, applied to these points, produces in the conductor a current of one ampere. PINT is a unit of measurement for liquids, equal to one-eighth of a gallon or 16 fluid ounces. It is commonly used in the United States and the United Kingdom.