| rutherford | (n) a unit strength of a radioactive source equal to one million disintegrations per second |
| rutherford | (n) British chemist who isolated nitrogen (1749-1819), Syn. Daniel Rutherford |
| rutherford | (n) British physicist (born in New Zealand) who discovered the atomic nucleus and proposed a nuclear model of the atom (1871-1937), Syn. First Baron Rutherford, First Baron Rutherford of Nelson, Ernest Rutherford |
| rutherford atom | (n) first modern concept of atomic structure; all of the positive charge and most of the mass of the atom are contained in a compact nucleus; a number of electrons (equal to the atomic number) occupy the rest of the volume of the atom and neutralize the positive charge |
| rutherfordium | (n) a radioactive transuranic element which has been synthesized, Syn. Unq, atomic number 104, element 104, unnilquadium, Rf |
| hayes | (n) 19th President of the United States; his administration removed federal troops from the South and so ended the Reconstruction Period (1822-1893), Syn. President Hayes, Rutherford Birchard Hayes, Rutherford B. Hayes |
