15-letter words containing o, d, i, f
- half-round file — a file having a semicircular cross-section
- hard of hearing — partially deaf
- heralds' office — the official heraldic authority of Scotland.
- heredo-familial — denoting a condition or disease that may be passed from generation to generation and to several members of one family
- high definition — a system for screen display of images that are sharper and more detailed than normal, having many more than the standard number of scanning lines per frame: Most TV shows are available in high definition. Abbreviation: HD. See also high-definition television.
- high-definition — High-definition television or technology is a digital system that gives a much clearer picture than traditional television systems.
- holding furnace — a small furnace for holding molten metal produced in a larger melting furnace at a desired temperature for casting.
- holiday feeling — the positive feeling people experience while on holiday and during holiday periods such as the Christmas period
- holiday traffic — increased road traffic during holiday periods and public holidays
- humidifications — Plural form of humidification.
- hydrofracturing — a process in which fractures in rocks below the earth's surface are opened and widened by injecting chemicals and liquids at high pressure: used especially to extract natural gas or oil.
- hyperfastidious — extremely or excessively fastidious
- i beg to differ — You say 'I beg to differ' when you are politely emphasizing that you disagree with someone.
- identifications — Plural form of identification.
- immunodeficient — Exhibiting immunodeficiency.
- immunodiffusion — any of various analytical techniques that involve antigen and antibody solutions diffusing toward each other in a gel until antibody binds specifically to antigen to form a precipitate.
- in deference to — out of regard or respect for (a person or the person's position or wishes)
- in dependent of — not influenced or controlled by others in matters of opinion, conduct, etc.; thinking or acting for oneself: an independent thinker.
- in line of duty — in the performance of authorized or prescribed military duty
- in the hands of — under the control of
- in the midst of — amid, among
- indemnification — the act of indemnifying; state of being indemnified.
- inflation rider — An inflation rider is a rider that can be added to a long-term care insurance plan that adjusts the benefits over time to allow for inflation.
- infoword office — (tool) A suite of applications for Unix including a word processor, spreadsheet and database.
- infundibuliform — having the shape of a funnel; funnel-shaped.
- intake manifold — a collection of tubes through which the fuel-air mixture flows from the carburetor or fuel injector to the intake valves of the cylinders of an internal-combustion engine.
- irish wolfhound — one of an Irish breed of large, tall dogs having a rough, wiry coat ranging in color from white to brindle to black.
- irvine dataflow — (language) (Always called "Id") A non-strict, single assignment language and incremental compiler developed by Arvind and Gostelow and used on MIT's Tagged-Token Dataflow Architecture and planned to be used on Motorola's Monsoon. See also Id Nouveau.
- island grey fox — a similar and related animal, U. littoralis, inhabiting islands off North America
- jefferson davis — Alexander Jackson, 1803–92, U.S. architect.
- kidasa software — (company) A company which develops project management software for Microsoft Windows.
- kingdom of ends — (in Kantian ethics) a metaphorical realm to which belong those persons acting and being acted upon in accordance with moral law.
- kingsford-smith — Sir Charles (Edward). 1897–1935, Australian aviator and pioneer (with Charles Ulm) of trans-Pacific and trans-Tasman flights
- land of promise — Promised Land.
- law of identity — the law that any proposition implies itself.
- leadwort family — the plant family Plumbaginaceae, characterized by shrubs and herbaceous plants of seacoasts and semiarid regions, having basal or alternate leaves, spikelike clusters of tubular flowers, and dry, one-seeded fruit, and including leadwort, sea lavender, statice, and thrift.
- leaf primordium — a group of cells that will develop into a leaf, seen as small bulges just below the shoot apex.
- lie of the land — the topography of the land
- lift-drag ratio — the ratio of the lift to the drag of an airfoil.
- line of apsides — a line joining the lower and higher apsides, forming the major axis of the orbit
- line of descent — someone's line of descent is all the people they are descended from
- linear manifold — subspace (def 2b).
- lofoten islands — group of Norwegian islands within the Arctic Circle, off the NW coast of Norway: c. 550 sq mi (1,424 sq km)
- longshore drift — beach drift.
- lord high fixer — [Primarily British, from Gilbert & Sullivan's "Lord High Executioner"] The person in an organisation who knows the most about some aspect of a system. See wizard.
- lord of misrule — (in England) a person formerly chosen to direct the Christmas revels and sports.
- maid of orléans — Saint ("the Maid of Orléans") 1412?–31, French national heroine and martyr who raised the siege of Orléans.
- mail order firm — a company that sells goods by mail order
- man of his word — a unit of language, consisting of one or more spoken sounds or their written representation, that functions as a principal carrier of meaning. Words are composed of one or more morphemes and are either the smallest units susceptible of independent use or consist of two or three such units combined under certain linking conditions, as with the loss of primary accent that distinguishes black·bird· from black· bird·. Words are usually separated by spaces in writing, and are distinguished phonologically, as by accent, in many languages.
- man-of-war bird — frigate bird.