9-letter words containing o, s, i
- coverslip — a very thin piece of glass placed over a specimen on a glass slide that is to be examined under a microscope
- cowardise — Obsolete spelling of cowardice.
- cowfishes — Plural form of cowfish.
- coxsackie — Any of several viruses of the genus Enterovirus similar to poliovirus.
- coxswains — Plural form of coxswain.
- crayonist — (dated) An artist who uses crayons.
- creations — The action or process of bringing something into existence.
- creditors — Plural form of creditor.
- cretinous — If you describe someone as cretinous, you think they are very stupid.
- criminous — criminal
- crimsoned — Simple past tense and past participle of crimson.
- crinosity — Hairiness.
- cristobal — seaport in Panama, at the Caribbean entrance to the Panama Canal: part of the city of Colón
- cristophe — Henri [ahn-ree] /ɑ̃ˈri/ (Show IPA), ("Henri I"I) 1767–1820, Haitian revolutionary general, born in Grenada: king 1811–20.
- crocosmia — any plant of the cormous S. African genus Crocosmia, including the plant known to gardeners as montbretia: family Iridaceae
- croisette — a projection at a corner of a door or window architrave.
- croissant — Croissants are small, sweet bread rolls in the shape of a crescent that are eaten for breakfast.
- crossbill — any of various widely distributed finches of the genus Loxia, such as L. curvirostra, that occur in coniferous woods and have a bill with crossed mandible tips for feeding on conifer seeds
- crossbite — a dental condition in which the lower teeth are in front of the upper teeth
- crossfire — Crossfire is gunfire, for example in a battle, that comes from two or more different directions and passes through the same area.
- crossfish — a starfish
- crosshair — either of the two fine mutually perpendicular lines or wires that cross in the focal plane of a theodolite, gunsight, or other optical instrument and are used to define the line of sight
- crossings — Plural form of crossing.
- crossline — a line crossing another line or connecting two separated points: The main lines are linked at intervals by crosslines.
- crossrail — a horizontal slat forming part of the back of a chair.
- crosstied — secured with crossties
- crossties — Plural form of crosstie.
- crosswind — A crosswind is a strong wind that blows across the direction that vehicles, boats, or aircraft are travelling in, and that makes it difficult for them to keep moving steadily forward.
- crosswire — Crosshair; reticle.
- crosswise — Crosswise means diagonally across something.
- crotalism — a type of poisoning caused by ingestion of plants of the genus Crotalaria
- crotonism — poisoning by ingestion of croton oil, characterized by burning of the mouth, severe diarrhea, and colic, with possible death from respiratory or circulatory failure.
- croupiers — Plural form of croupier.
- crownings — Plural form of crowning.
- ctesiphon — an ancient city on the River Tigris about 100 km (60 miles) above Babylon. First mentioned in 221 bc, it was destroyed in the 7th and 8th centuries ad
- cunjevois — Plural form of cunjevoi.
- curculios — Plural form of curculio.
- curiosity — Curiosity is a desire to know about something.
- curiouser — (nonstandard) Comparative form of curious.
- curiously — eager to learn or know; inquisitive.
- cursorial — adapted for running
- cursorily — going rapidly over something, without noticing details; hasty; superficial: a cursory glance at a newspaper article.
- cushioned — provided with cushions
- cushionet — a small cushion
- cuspidors — Plural form of cuspidor.
- custodial — Custodial means relating to keeping people in prison.
- custodian — The custodian of an official building, a companies' assets, or something else valuable is the person who is officially in charge of it.
- custodier — a custodian
- custodies — Plural form of custody.
- customise — to modify or build according to individual or personal specifications or preference: to customize an automobile.