13-letter words containing h, y, d, r, i
- rayleigh disk — a small circular disk, usually of mica, that is suspended from a fiber and tends to be deflected at right angles to a stream of air, indicating by its deflection the intensity of a sound wave.
- richard petty — Richard, born 1937, U.S. racing-car driver.
- roman holiday — a public spectacle or controversy marked by barbarism, vindictiveness, or scandal.
- seventy-third — next after the seventy-second; being the ordinal number for 73.
- shunting yard — a place where railway coaches are manoeuvred
- spheroidicity — a spheroidal state or form.
- striped hyena — a hyena, Hyaena hyaena, of northern Africa, Arabia, and India, having a grayish coat with distinct blackish stripes.
- synarthrodial — synarthrosis.
- synchondrosis — the joining of two bones by cartilage
- the iron lady — a nickname often used to describe female heads of government around the world, meaning 'strong-willed woman'. Most famously used of the Prime Minister of the United Kingdom (1979 to 1990) Margaret Thatcher
- thermodynamic — of or relating to thermodynamics.
- thirty-second — next after the thirty-first; being the ordinal number for 32.
- thyroid gland — a two-lobed endocrine gland, located at the base of the neck that secretes two hormones that regulate the rates of metabolism, growth, and development.
- thyroidectomy — excision of all or a part of the thyroid gland.
- tread lightly — to proceed with delicacy or tact
- typhoid fever — Also called typhoid fever. an infectious, often fatal, febrile disease, usually of the summer months, characterized by intestinal inflammation and ulceration, caused by the typhoid bacillus, which is usually introduced with food or drink.
- unthriftyhead — thriftlessness
- vindhya range — a mountain range in central India: separates the Ganges basin from the Deccan, marking the limits of northern and peninsular India. Greatest height: 1113 m (3651 ft)
- whydah (bird) — any of several chiefly brown-and-black, African passerine birds (family Ploceidae): the male has long, drooping tail feathers during the breeding season