18-letter words containing o, d, g, r
- runge-kutta method — a numerical method, involving successive approximations, used to solve differential equations.
- saint george's day — April 23, celebrated in parts of the British Commonwealth in honor of the patron saint of Britain and especially in New Zealand as a bank holiday.
- seafloor spreading — a process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out.
- second-degree burn — a burned place or area: a burn where fire had ripped through the forest.
- secondary diagonal — a diagonal line or plane.
- secondary offering — the sale of a large block of outstanding stock off the floor of an exchange, usually by a major stockholder.
- self-comprehending — to understand the nature or meaning of; grasp with the mind; perceive: He did not comprehend the significance of the ambassador's remark.
- shaggy dog (story) — a long, rambling joke, typically involving ludicrously unreal or irrational behavior and usually having an irrelevant conclusion
- shift one's ground — to change one's argument or defense
- skin friction drag — aerodynamic resistance or drag due to the contact of moving air with the surface of an airplane, a glider, etc.
- slim hole drilling — Slim hole drilling is drilling a well in which at least 90 percent of the hole has a diameter of seven inches or less.
- song without words — a song which only consists of a tune or melody and does not have any lyrics
- sound spectrograph — an electronic device for recording a sound spectogram.
- sow dragon's teeth — to take some action that is intended to prevent strife or trouble but that actually brings it about
- spread one's wings — to make full use of one's abilities
- squinting modifier — a word or phrase that can modify either the words that precede it or those that follow, as frequently in the sentence Studying frequently is tedious.
- stand one's ground — the solid surface of the earth; firm or dry land: to fall to the ground.
- stand-by generator — an electrical system which operates automatically in case the usual system malfunctions
- standard of living — a grade or level of subsistence and comfort in everyday life enjoyed by a community, class, or individual: The well-educated generally have a high standard of living.
- strathclyde region — a former local government region in W Scotland: formed in 1975 from Glasgow, Renfrewshire, Lanarkshire, Buteshire, Dunbartonshire, and parts of Argyllshire, Ayrshire, and Stirlingshire; replaced in 1996 by the council areas of Glasgow, Renfrewshire, East Renfrewshire, Inverclyde, North Lanarkshire, South Lanarkshire, Argyll and Bute, East Dunbartonshire, West Dunbartonshire, North Ayrshire, South Ayrshire, and East Ayrshire
- strong derived set — the set of all strong accumulation points of a given set.
- summary proceeding — a mode of trial authorized by statute to be held before a judge without the usual full hearing.
- supraorbital ridge — browridge.
- tender loving care — considerate and kindly care, as of someone who is ill, upset, etc
- the grand national — an annual steeplechase run at Aintree, Liverpool, since 1839
- theodore gericault — (Jean Louis André) Théodore [zhahn lwee ahn-drey tey-aw-dawr] /ʒɑ̃ lwi ɑ̃ˈdreɪ teɪ ɔˈdɔr/ (Show IPA), 1791–1824, French painter.
- thin on the ground — If people or things of a particular kind are thin on the ground, there are very few of them.
- to a grinding halt — If you describe a bad situation as grinding, you mean it never gets better, changes, or ends.
- to agree to differ — If two people who are arguing about something agree to disagree or agree to differ, they decide to stop arguing because neither of them is going to change their opinion.
- to be above ground — to be alive
- to get a bad press — If someone or something gets a bad press, they are criticized, especially in the newspapers, on television, or on radio. If they get a good press, they are praised.
- to gird your loins — If you gird your loins, you prepare to do something difficult or dangerous.
- to-ing and fro-ing — If you say that there is a lot of to-ing and fro-ing, you mean that the same actions or movements or the same arguments are being repeated many times.
- transcendental ego — (in Kantian epistemology) that part of the self that is the subject and never the object.
- transporter bridge — a bridge for carrying passengers and vehicles by means of a platform suspended from a trolley.
- ultrasonic welding — the use of high-energy vibration of ultrasonic frequency to produce a weld between two components which are held in close contact
- under the aegis of — guided or protected by
- under-registration — the act of registering.
- urban homesteading — homesteading (def 2).
- vectorcardiography — a method of determining the direction and magnitude of the electrical forces of the heart.
- video conferencing — the holding of videoconferences.
- wage determination — the process of setting wage rates or establishing wage structures in particular situations
- wildlife programme — (esp on television) a documentary whose subject is wild animals in their natural habitat or undomesticated fauna and flora generally
- wood-burning stove — cooker: fueled by wood
- work-study program — a program enabling high-school or college students to combine academic work with actual job experience.
- wrongful dismissal — the act of making someone redundant for reasons which are illegal or unjust