holmium
- n a trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds
holocanthus tricolor
- n gold and black butterflyfish found from West Indies to Brazil
holocaust
- n an act of mass destruction and loss of life (especially in war or by fire)
a nuclear holocaust - n the mass murder of Jews under the German Nazi regime from 1941 until 1945
holocentrus
- n type genus of the family Holocentridae; squirrelfishes
holocentrus ascensionis
- n bright red fish of West Indies and Bermuda
holocentrus bullisi
- n a squirrelfish found from South Carolina to Bermuda and Gulf of Mexico
holocentrus coruscus
- n on reefs from Bermuda and Florida to northern South America
holocephalan
- n fish with high compressed head and a body tapering off into a long tail
holocephalian
- n fish with high compressed head and a body tapering off into a long tail
holofernes
- n (Apocrypha) the Assyrian general who was decapitated by the biblical heroine Judith
hologram
- n the intermediate photograph (or photographic record) that contains information for reproducing a three-dimensional image by holography
holograph
- n handwritten book or document
- n the intermediate photograph (or photographic record) that contains information for reproducing a three-dimensional image by holography