16-letter words containing a, d, i, s, o
- radiosymmetrical — radially symmetrical.
- radiotransparent — transparent to radiation; invisible in x-ray photographs and under fluoroscopy (opposed to radiopaque).
- radius of action — the maximum distance that a ship, aircraft, or land vehicle can travel from its base and return without refuelling
- railroad station — railway station, train stop
- rectus abdominis — a long flat muscle that extends along the whole length of both sides of the abdomen. It flexes the vertebral column, particularly the lumbar portion; it also tenses the anterior abdominal wall and assists in compressing the abdominal contents
- redistributional — a distribution performed again or anew.
- released version — release
- religious leader — head of a church or order
- reservation desk — a desk in a hotel, office, etc, where an employee takes bookings for rooms, tickets, etc
- residential home — a home with social-work supervision for people who need more than just housing accommodation, such as esp the elderly, and also children in care or mentally handicapped adults
- revised algol 60 — ALGOL 60 Revised
- rhode island red — one of an American breed of chickens having dark reddish-brown feathers and producing brown eggs.
- rigid designator — an expression that identifies the same individual in every possible world: for example, "Shakespeare" is a rigid designator since it is possible that Shakespeare might not have been a playwright but not that he might not have been Shakespeare
- risus sardonicus — fixed contraction of the facial muscles resulting in a peculiar distorted grin, caused esp by tetanus
- roadside repairs — repairs to a vehicle that has broken down on the road
- roosevelt island — Formerly Welfare Island, Blackwells Island. an island in the East River, New York City: residential community. 1½ miles (2½ km) long.
- roskind grammars — (tool) Yacc-based parsers for C and C++ by Jim Roskind. It does not use the %prec and %assoc YACC features so conflicts are never hidden. The C grammar has only one shift-reduce conflict, the C++ grammar has a few more. With byacc it can produce graphical parse trees automatically. The C grammar conforms to ANSI C and the C++ grammar supports cfront 2.0 constructs.
- run rings around — a typically circular band of metal or other durable material, especially one of gold or other precious metal, often set with gems, for wearing on the finger as an ornament, a token of betrothal or marriage, etc.
- russian orthodox — of or relating to the Russian Orthodox Church
- sado-masochistic — Something that is sado-masochistic is connected with the practice of sado-masochism.
- safe deposit box — A safe deposit box is a small box, usually kept in a special room in a bank, in which you can store valuable objects.
- safe-deposit box — a lockable metal box or drawer, especially in a bank vault, used for safely storing valuable papers, jewelry, etc.
- sangre de cristo — a mountain range in S Colorado and N New Mexico: a part of the Rocky Mountains. Highest peak, Blanca Peak, 14,390 feet (4385 meters).
- santiago de cuba — a region in Ecuador, E of the Andes: the border long disputed by Peru.
- sapodilla family — the plant family Sapotaceae, characterized by chiefly tropical trees and shrubs having milky juice, simple leaves, small flowers, and fruit in the form of a berry, and including the buckthorn (genus Bumelia), sapodilla, star apple, and trees that are the source of gutta-percha and balata.
- savings and loan — type of savings bank
- scandinavian lox — a kind of brine-cured salmon, having either a salt cure (Scandinavian lox) or a sugar cure (Nova Scotia lox) often eaten with cream cheese on a bagel.
- scar tissue code — (humour, programming) Old code that is commented out but still included in the current release.
- school-age child — a child who is old enough to go to school
- schouten islands — a group of islands belonging to Papua New Guinea, in the Pacific Oceans, off the N coast of New Guinea.
- seaside knotweed — See under knotweed.
- second adventist — Adventist (def 1).
- secondary tissue — tissue derived from cambium.
- sedimentary rock — rock formed from compacted minerals
- sekondi-takoradi — a seaport in SW Ghana.
- self-degradation — the act of degrading.
- self-denigration — to speak damagingly of; criticize in a derogatory manner; sully; defame: to denigrate someone's character.
- self-deprecation — belittling or undervaluing oneself; excessively modest.
- self-deprivation — the act of depriving.
- self-designation — a name taken for oneself or one's own people
- self-indignation — strong displeasure at something considered unjust, offensive, insulting, or base; righteous anger.
- self-opinionated — conceited; having an inordinately high regard for oneself, one's own opinions, views, etc.
- self-vindication — the act of vindicating.
- semidomesticated — living in a state of partial domestication.
- sex-and-shopping — (of a novel) belonging to a genre of novel in which the central character, a woman, has a number of sexual encounters, and the author mentions the name of many up-market products
- sexual deviation — a type of mental disorder characterized by a preference for or obsession with unusual sexual practices, as pedophilia, sadomasochism, or exhibitionism.
- shakedown cruise — extortion, as by blackmail or threats of violence.
- shared ownership — (in Britain) a form of house purchase whereby the purchaser buys a proportion of the dwelling, usually from a local authority or housing association, and rents the rest
- shoot-to-disable — of or relating to shooting by soldiers or police that is intended to disable rather than kill
- shorthand typing — shorthand and typing