Words starting with u-r-e
Maybe these words will be useful:
- u-235 — the radioactive uranium isotope having a mass number of 235, comprising 0.715 percent of natural uranium. When bombarded with neutrons it undergoes fission with the release of energy.
- u-238 — the radioactive uranium isotope having a mass number 238, comprising 99.28 percent of natural uranium: used chiefly in nuclear reactors as a source of the fissionable isotope plutonium 239.
- u-239 — the uranium isotope with a mass number 239. It is artificially produced by the neutron bombardment of uranium 238.
- u-bend — pipe
- u-boat — a German submarine.
- u-boats — a German submarine.
- u-bolt — a bar of iron bent into the shape of a U , fitted with a screw thread and nut at each end.
- u-lock — a lock, consisting of a strong metal U-shaped ring, that is used to secure a bicycle to a post or rack