21-letter words containing a, h, o
- wildlife photographer — someone that specializes in taking photographs of wild animals, especially in their natural habitats, and plants
- william the conqueror — ("the Conqueror") 1027–87, duke of Normandy 1035–87; king of England 1066–87 (son of Robert I, duke of Normandy).
- with one's bare hands — If someone does something with their bare hands, they do it without using any weapons or tools.
- without qualification — If something is stated or accepted without qualification, it is stated or accepted as it is, without the need for any changes.
- writ of habeas corpus — law: petition for hearing
- x-ray crystallography — the determination of the structure of a crystal by the use of x-ray diffraction.
- yellow-throated vireo — an olive-green vireo, Vireo flavifrons, of eastern North America, having a bright yellow throat and breast.
- youth training scheme — (formerly, in Britain) a scheme, run by the Training Agency, to provide vocational training for unemployed 16–17-year-olds