Ells·worth 
(ĕlzwûrth′), Lincoln 1880-1951.
(ĕlzwûrth′), Lincoln 1880-1951. American explorer who took part in several polar expeditions, including a 1935 flight across the Antarctic, during which he claimed large tracts for the United States.
- hydrogen
- hydrogenase
- hydrogenate
- hydrogen bomb
- hydrogen bond
- hydrogen bromide
- hydrogen chloride
- hydrogen cyanide
- hydrogen fluoride
- hydrogen iodide
- hydrogen ion
- hydrogenolysis
- hydrogenous
- hydrogen peroxide
- hydrogen sulfide
- hydrogeologic
- hydrogeological
- hydrogeologist
- hydrogeology
- hydrographer
- hydrographic
- hydrographically
- hydrography
- hydroid
- hydrokinetic