9-letter words containing a, c, o, s
- cimbaloms — Plural form of cimbalom.
- cinchonas — Plural form of cinchona.
- cinnamons — Plural form of cinnamon.
- cis woman — an adult who was born female and whose gender identity is female.
- citations — Plural form of citation.
- clafoutis — a French baked pudding
- clamorous — If you describe people or their voices as clamorous, you mean they are talking loudly or shouting.
- clangours — Plural form of clangour.
- classbook — a book kept by a teacher recording student attendance, grades, etc.
- classroom — A classroom is a room in a school where lessons take place.
- classwork — school assignments done in the classroom
- claymores — Plural form of claymore.
- claystone — a compact very fine-grained rock consisting of consolidated clay particles
- clinoaxis — in a monoclinic crystal, the lateral axis which forms an oblique angle with the vertical axis
- clinostat — an apparatus for studying tropisms in plants, usually a rotating disc to which the plant is attached so that it receives an equal stimulus on all sides
- cloacitis — inflammation of the cloaca in birds, including domestic fowl, and other animals with a common opening of the urinary and gastrointestinal tracts
- cloistral — of, like, or characteristic of a cloister
- closeable — able to be closed
- closehead — the entrance to a tenement close
- club soda — Club soda is fizzy water used for mixing with alcoholic drinks and fruit juice.
- club sofa — a heavily upholstered sofa having solid sides and a low back.
- co-equals — equal with another or each other in rank, ability, extent, etc.: The two top students were coequal.
- coagulase — any enzyme that causes coagulation of blood
- coal sack — a dark nebula in the Milky Way close to the Southern Cross
- coal seam — a bed of coal.
- coalesced — Simple past tense and past participle of coalesce.
- coalescer — A coalescer is a vessel or stage which causes small drops of a liquid to come together and form a stream or form elements with a larger volume.
- coalesces — Third-person singular simple present indicative form of coalesce.
- coalfaces — Plural form of coalface.
- coalhouse — a shed or building for storing coal
- coalmines — Plural form of coalmine.
- coarsened — Simple past tense and past participle of coarsen.
- coastally — In a coastal manner.
- coastland — the land fringing a coast
- coastline — A country's coastline is the outline of its coast.
- coastward — towards the coast
- coastwise — along the coast
- coatdress — a coatlike dress having a buttoned front and, usually, lapels and long sleeves
- coatracks — Plural form of coatrack.
- coatstand — a frame or pole equipped with hooks or arms for hanging up coats, etc
- coattails — If you do something on the coattails of someone else, you are able to do it because of the other person's success, and not because of your own efforts.
- coauthors — Plural form of coauthor.
- cobaltous — of or containing cobalt in the divalent state
- cocainise — Alt form cocainize.
- cocainism — addiction to cocaine
- cocainist — a cocaine addict
- cockapoos — Plural form of cockapoo.
- cockatoos — Plural form of cockatoo.
- cockboats — Plural form of cockboat.
- cockswain — coxswain