18-letter words containing s, d, e, i
- autoimmune disease — a disease resulting from a disordered immune reaction in which antibodies are produced against one's own tissues, as systemic lupus erythematosus or rheumatoid arthritis.
- avoirdupois weight — a British and American system of weights based on a pound of 16 ounces
- back in the saddle — at work again
- ballistic pendulum — a device consisting of a large mass hung from a horizontal bar by two rods, used to measure the velocity of an object, as a bullet, by retaining the object upon impact, its velocity being a function of the displacement of the mass.
- bells and whistles — additional features or accessories which are nonessential but very attractive
- biodiversification — the process by which the diversity of plants or animals develops or is increased within a particular region or group of organisms.
- bird's-foot violet — a North American violet (Viola pedata) having divided leaves and large blue or purple flowers
- bird's-nest fungus — any fungus of the family Nidulariaceae, having a nestlike spore-producing body containing egglike spore-filled structures
- bird's-nest orchid — a brown parasitic Eurasian orchid, Neottia nidus-avis, whose thick fleshy roots resemble a bird's nest and contain a fungus on which the orchid feeds
- birds of a feather — If you refer to two people as birds of a feather, you mean that they have the same interests or are very similar.
- board of directors — A company's board of directors is the group of people elected by its shareholders to manage the company.
- board of elections — a bipartisan board appointed usually by local authorities and charged with control of elections and voting procedure.
- board of examiners — a group of people who officially administer examinations
- bottlenose dolphin — any dolphin of the genus Tursiops, esp T. truncatus, some of which have been kept in captivity and trained to perform tricks
- brazilian rosewood — a Brazilian tree, Dalbergia nigra, of the legume family.
- bread and circuses — something offered as a means of distracting attention from a problem or grievance
- brewer's blackbird — a blackbird, Euphagus cyanocephalus, of the U.S., the male of which has greenish-black plumage with a purplish-black head.
- bring-and-buy sale — A bring-and-buy sale is an informal sale to raise money for a charity or other organization. People who come to the sale bring things to be sold and buy things that other people have brought.
- briquet's syndrome — somatization disorder.
- broadcasting house — any of a number of buildings in the UK from which the BBC broadcasts or has broadcast
- building materials — materials such as bricks, cement, timber, etc
- burn one's bridges — If you burn your bridges, you do something which forces you to continue with a particular course of action, and makes it impossible for you to return to an earlier situation or relationship.
- business education — education for general knowledge of business practices.
- butler's sideboard — a sideboard, often with a fall front, having on its top a china cabinet with glazed doors.
- cape breton island — an island off SE Canada, in NE Nova Scotia, separated from the mainland by the Strait of Canso: its easternmost point is Cape Breton. Pop: 132 298 (2006). Area: 10 280 sq km (3970 sq miles)
- carbonic anhydrase — an enzyme in blood cells that catalyses the decomposition of carbonic acid into carbon dioxide and water, facilitating the transport of carbon dioxide from the tissues to the lungs
- carcinoid syndrome — the systemic effects, including flushing, palpitations, diarrhea, and cramps, resulting from increased blood levels of serotonin secreted by a carcinoid.
- celestial guidance — the guidance of a spacecraft or missile by reference to the position of one or more celestial bodies
- celestial latitude — the angular distance of a celestial body north or south from the ecliptic
- centralized school — a public school formed from the pupils and teachers of a number of discontinued smaller schools, especially in a rural district.
- chambered nautilus — nautilus (def 1).
- character disorder — a disorder characterized by socially undesirable behavior, as poor control of impulses or inability to maintain close emotional relationships, and by absence of anxiety or guilt.
- chickenheartedness — Alternative form of chicken-heartedness.
- children of israel — the Jews; Hebrews
- children's crusade — a crusade to recover Jerusalem from the Saracens, undertaken in 1212 by thousands of French and German children who perished, were sold into slavery, or were turned back.
- chinese fire drill — a state of chaotic, often clamorous disorder.
- chinese water deer — a small Chinese or Korean deer, Hydropotes inermis, having tusks and no antlers: introduced into England and France
- chord of the sixth — sixth chord.
- chrétien de troyes — 12th century, French poet, who wrote the five Arthurian romances Erec; Cligès; Lancelot, le chevalier de la charette; Yvain, le chevalier au lion; and Perceval, le conte del Graal (?1155–?1190), the first courtly romances
- christian democrat — a member or supporter of a Christian Democratic party
- christian endeavor — an organization of young people of various evangelical Protestant churches, formed in 1881 to promote Christian principles and service.
- christian reformed — of or relating to a Protestant denomination (Christian Reformed Church) organized in the U.S. in 1857 by groups that had seceded from the Dutch Reformed Church.
- christine de pisan — ?1364–?1430, French poet and prose writer, born in Venice. Her works include ballads, rondeaux, lays, and a biography of Charles V of France
- cigar-store indian — a wooden statue of an American Indian, traditionally displayed at the entrance of cigar stores.
- civil disobedience — Civil disobedience is the refusal by ordinary people in a country to obey laws or pay taxes, usually as a protest.
- classified section — the part of a publication that contains classified advertising
- closed corporation — a corporation the stock of which is owned by a small number of persons and is rarely traded on the open market
- closed scholarship — a scholarship for which only certain people, such as those from a particular school or with a particular surname, are eligible
- closed-box testing — functional testing
- collision diameter — the distance between the centers of two colliding molecules when at their closest point of approach.