17-letter words containing a, h, u, n, d, r
- rhodope mountains — a mountain range in SE Europe, in the Balkan Peninsula extending along the border between Bulgaria and Greece. Highest peak: Golyam Perelik (Bulgaria), 2191 m (7188 ft)
- russian wolfhound — borzoi.
- sandringham house — a residence of the royal family, in Sandringham, a village in E England, in Norfolk near the E shore of the Wash
- school playground — school's outdoor recreation area
- search and rescue — Search and rescue operations involve looking for people who are lost or in danger, for example, after a war or a natural disaster, and bringing them back safely.
- shetland pullover — a thick woollen sweater made from Shetland wool
- sir arthur harden — Sir Arthur, 1865–1940, English biochemist: Nobel Prize 1929.
- south farmingdale — a town on central Long Island, in SE New York.
- southern rhodesia — a former name (until 1964) of Zimbabwe (def 1).
- southern sporades — a group of Greek islands in the Aegean, including the Dodecanese, lying off the SW coast of Turkey
- stannous chloride — a white, crystalline, water-soluble solid, SnCl 2 ⋅2H 2 O, used chiefly as a reducing and tinning agent, and as a mordant in dyeing with cochineal.
- teacher education — training to become a teacher, usually at an institution of higher education
- therapeutic index — the ratio between the dosage of a drug that causes a lethal effect and the dosage that causes a therapeutic effect.
- thermal diffusion — the separation of constituents, often isotopes, of a fluid under the influence of a temperature gradient.
- thermal underwear — underwear designed to retain body heat in cold temperatures.
- thread escutcheon — a raised metal rim around a keyhole.
- under the weather — the state of the atmosphere with respect to wind, temperature, cloudiness, moisture, pressure, etc.
- undulatory theory — wave theory (def 1).
- vulcan death grip — (jargon) A variant of Vulcan nerve pinch derived from a Star Trek classic epsisode where a non-existant "Vulcan death grip" was used to fool Romulans that Spock had killed Kirk.