9-letter words containing a, l, i, o
- coulibiac — a Russian dish of rich pastry with a filling of salmon or other fish and mushrooms, onions, egg, buckwheat, dill, etc.
- courbaril — a tropical American leguminous tree, Hymenaea courbaril. Its wood is a useful timber and its gum is a source of copal
- crinoidal — (zoology) Relating to, consisting of, or containing crinoids.
- cristobal — seaport in Panama, at the Caribbean entrance to the Panama Canal: part of the city of Colón
- crossrail — a horizontal slat forming part of the back of a chair.
- crotaline — of or relating to rattlesnakes (Crotalinae)
- crotalism — a type of poisoning caused by ingestion of plants of the genus Crotalaria
- cursorial — adapted for running
- custodial — Custodial means relating to keeping people in prison.
- cycloidal — Pertaining to or resembling a cycloid; or a circle.
- cyclopian — having only one eye
- cytocidal — capable of killing cells.
- dado rail — a moulding at about waist height on an interior wall, used for decoration and to protect the wall
- daedalion — a son of Lucifer who, despondent over the death of his daughter Chione, leaped off Parnassus: Apollo changed him into a hawk.
- daffodils — Plural form of daffodil.
- dalhousie — 9th Earl of, title of George Ramsay. 1770–1838, British general; governor of the British colonies in Canada (1819–28)
- daltonian — relating to John Dalton or his atomic theory
- daltonism — colour blindness, esp the confusion of red and green
- dandelion — A dandelion is a wild plant which has yellow flowers with lots of thin petals. When the petals of each flower drop off, a fluffy white ball of seeds grows.
- de molina — Tirso (ˈtirso). Pen name of Gabriel Téllez. ?1571–1648, Spanish dramatist; author of the first dramatic treatment of the Don Juan legend El Burlador de Sevilla (1630)
- de valois — Dame Ninette (niːˈnɛt). original name Edris Stannus. 1898–2001, British ballet dancer and choreographer, born in Ireland: a founder of the Vic-Wells Ballet Company (1931), which under her direction became the Royal Ballet (1956)
- decapolis — a league of ten cities, including Damascus, in the northeast of ancient Palestine: established in 63 bc by Pompey and governed by Rome
- deflation — Deflation is a reduction in economic activity that leads to lower levels of industrial output, employment, investment, trade, profits, and prices.
- defoliant — A defoliant is a chemical used on trees and plants to make all their leaves fall off. Defoliants are especially used in war to remove protection from an enemy.
- defoliate — To defoliate an area or the plants in it means to cause the leaves on the plants to fall off or be destroyed. This is done especially in war to remove protection from an enemy.
- deisolate — to remove from isolation.
- delacroix — (Ferdinand Victor) Eugène (øʒɛn). 1798–1863, French romantic painter whose use of colour and free composition influenced impressionism. His paintings of historical and contemporary scenes include The Massacre at Chios (1824)
- deltoidal — of or relating to a river delta.
- demonical — inspired as if by a demon, indwelling spirit, or genius.
- denominal — denominative (def 2).
- deucalion — the son of Prometheus and, with his wife Pyrrha, the only survivor on earth of a flood sent by Zeus (Deucalion's flood). Together, they were allowed to repopulate the world by throwing stones over their shoulders, which became men and women
- diabolify — (transitive) To ascribe diabolical qualities to; to change into, or represent as, a devil.
- diabolism — activities designed to enlist the aid of devils, esp in witchcraft or sorcery
- diabolist — Theology. action aided or caused by the devil; sorcery; witchcraft. the character or condition of a devil. a doctrine concerning devils. a belief in or worship of devils.
- diabolize — to make (someone or something) diabolical
- diabology — the study of the devil or devils
- diachylon — a type of adhesive plaster, formerly made of various plant juices, but later containing lead oxide and glycerin
- diagonals — Plural form of diagonal.
- dial down — to reduce or become reduced
- dial tone — The dial tone is the same as the dialling tone.
- dialation — Misspelling of dilation.
- dialogism — a deduction with one premise and a disjunctive conclusion
- dialogist — a person who writes or takes part in a dialogue
- dialogite — rhodochrosite.
- dialogize — to carry on a dialogue
- dialogued — Simple past tense and past participle of dialogue.
- dialogues — Plural form of dialogue.
- diastolic — (of blood pressure) indicating the arterial pressure during the interval between heartbeats.
- dictional — of or relating to diction
- dicumarol — a white, crystalline powder, C19H12O6, originally extracted from spoiled sweet clover, used to retard blood clots