| Butyrometer | n. [ L. butyrum butter + -meter. ] An instrument for determining the amount of fatty matter or butter contained in a sample of milk. [ 1913 Webster ] |
| Lactobutyrometer | n. [ L. lac, lactis, milk + E. butyrometer. ] An instrument for determining the amount of butter fat contained in a given sample of milk. [ 1913 Webster ] |