15-letter words containing t, h, i, o
- interscholastic — between schools, or representative of different schools, especially secondary schools: interscholastic athletics.
- into the ground — beyond what is requisite or can be endured; to exhaustion
- ironstone china — a tough durable earthenware
- isolation booth — a soundproof booth located within a television studio, used to prevent the occupant, usually a contestant in a game show, from hearing certain parts of the show.
- isopropyl ether — a colorless, volatile, flammable, slightly water-soluble liquid, C 6 H 14 O, used chiefly as a solvent for waxes, fats, and resins.
- isothermal-line — Meteorology. a line on a weather map or chart connecting points having equal temperature.
- isothiocyanates — Plural form of isothiocyanate.
- isthmus of suez — a strip of land in NE Egypt, between the Mediterranean and the Red Sea: links Africa and Asia and is crossed by the Suez Canal
- it's sb's shout — If you are in a pub and someone you are with says 'It's your shout' or 'It's my shout', they mean that it is your turn or their turn to buy a round of drinks.
- jack-in-the-box — a toy consisting of a box from which an enclosed figure springs up when the lid is opened.
- javelin thrower — a person who throws a javelin
- john lewis list — a list used by clerks in the House of Commons to assess the amount that may reasonably be claimed for various items by Members of Parliament as living expenses
- john of austria — ("Don John") 1547?–78, Spanish naval commander and general: victor at the battle of Lepanto.
- joint ownership — sharing of property
- joint-household — a type of extended family composed of parents, their children, and the children's spouses and offspring in one household.
- joseph pulitzer — Joseph, 1847–1911, U.S. journalist and publisher, born in Hungary.
- judeo-christian — of or relating to the religious writings, beliefs, values, or traditions held in common by Judaism and Christianity.
- kick into touch — to kick the ball out of the playing area and into touch
- kinesthesiology — The medical and therapeutic study of the movement of muscles and joints.
- kingsford-smith — Sir Charles (Edward). 1897–1935, Australian aviator and pioneer (with Charles Ulm) of trans-Pacific and trans-Tasman flights
- knight bachelor — bachelor (def 3).
- labyrinthodonts — Plural form of labyrinthodont.
- lake saint john — a lake in Canada, in S Quebec: drained by the Saguenay River. Area: 971 sq km (375 sq miles)
- lake washington — a lake in W Washington, forming the E boundary of the city of Seattle: linked by canal with Puget Sound. Length: about 32 km (20 miles). Width: 6 km (4 miles)
- lake-saint-john — Henry, 1st Viscount Bolingbroke, Bolingbroke, 1st Viscount.
- lay it on thick — to put or place in a horizontal position or position of rest; set down: to lay a book on a desk.
- lay on the line — a mark or stroke long in proportion to its breadth, made with a pen, pencil, tool, etc., on a surface: a line down the middle of the page.
- lethal mutation — a gene that under certain conditions causes the death of an organism.
- leukodystrophic — Of or pertaining to leukodystrophy.
- lichenification — a leathery hardening of the skin, usually caused by chronic irritation.
- lick into shape — to pass the tongue over the surface of, as to moisten, taste, or eat (often followed by up, off, from, etc.): to lick a postage stamp; to lick an ice-cream cone.
- lie of the land — the topography of the land
- light pollution — unwanted or harmful light, as from bright street lights or neon signs.
- lighthouse tube — a vacuum tube with the electrodes arranged in parallel layers closely spaced, giving a relatively high-power output at high frequencies.
- literary theory — the systematic analysis and study of literature using general principles
- lithochromatics — the art or process of painting in oil on stone and taking impressions from the result
- local authority — council, local government
- locomotive shed — a shed in which locomotives are kept
- logarithmically — In a logarithmic manner.
- longshore drift — beach drift.
- longsightedness — Farsight; farsightedness; far sight; long sight.
- low bandwidth x — (networking) (LBX) An implementation of the X Window System designed to improve performance over ISDN, WAN, and serial lines.
- low earth orbit — (communications) (LEO) The kind of orbit used by communications satellites that will offer high bandwidth for video on demand, television, and Internet communications. A satellite in LEO, in contrast to one in a geostationary orbit, is not in a fixed position relative to the Earth's surface so several satellites are required to provide continuous service.
- lymphocytopenia — (pathology) An abnormally low level of lymphocytes in the blood.
- lymphoid tissue — of, relating to, or resembling lymph.
- madison heights — a city in SE Michigan: suburb of Detroit.
- mahrisch-ostrau — German name of Moravská Ostrava.
- make a habit of — If you make a habit of doing something, you do it regularly or often.
- make a thing of — to make a fuss about; exaggerate the importance of
- make it hot for — having or giving off heat; having a high temperature: a hot fire; hot coffee.