13-letter words containing a, c, o, y
- conventionary — (of a form of tenure) fixed by convention as opposed to custom
- convulsionary — of or affected with convulsion.
- conway's life — Conway's Game of Life
- cooperatively — working or acting together willingly for a common purpose or benefit.
- cooperativity — an interaction between structural units within a molecule or between molecules in an assemblage that enables the system to respond more sharply to an external change than would isolated units
- copy negative — master (def 21).
- copy the mail — letters, packages, etc., that are sent or delivered by means of the postal system: Storms delayed delivery of the mail.
- copyrightable — the exclusive right to make copies, license, and otherwise exploit a literary, musical, or artistic work, whether printed, audio, video, etc.: works granted such right by law on or after January 1, 1978, are protected for the lifetime of the author or creator and for a period of 70 years after his or her death.
- corduroy road — a road across swampy ground, made of logs laid transversely
- core analysis — Core analysis is the process of studying a sample of rock in a laboratory.
- cornish pasty — A Cornish pasty is a small pie with meat and vegetables inside.
- coronary vein — any of several veins that receive blood from the heart wall and empty into the coronary sinus.
- correlatively — so related that each implies or complements the other.
- corroboratory — Serving to corroborate or strengthen.
- cost analysis — an economic evaluation
- costimulatory — Of or pertaining to co-stimulation.
- costume party — A costume party or costume ball is a party at which the guests try to look like famous people or people from history, from stories, or from particular professions.
- cotemporality — The state or characteristic of existing or occurring during the same period of time.
- counterplayer — a person who makes a counterplay
- country dance — a type of folk dance in which couples are arranged in sets and perform a series of movements, esp facing one another in a line
- country-dance — a dance of rural English origin in which the dancers form circles or squares or in which they face each other in two rows.
- county family — an old family that has lived in a particular county for several generations
- courtesy call — a formal visit
- courtesy card — a privilege card
- coxcombically — in a coxcombical manner
- cranberry bog — a bog in which cranberry plants are cultivated.
- crayola books — (publication) A humorous and/or disparaging term for the rainbow series of National Computer Security Center (NCSC) computer security standards. See also Orange Book.
- crop spraying — the spraying of crops with insecticide, fungicide, etc
- crustaceology — The branch of zoology dealing with crustaceans.
- cryogenically — in a cryogenic manner
- cryotherapies — Plural form of cryotherapy.
- cryptoanalyst — Alternative form of cryptanalyst.
- cryptoclastic — (of minerals and rocks) composed of microscopic fragments
- cryptoclimate — the climate of a small area, as of confined spaces such as caves or houses (cryptoclimate) of plant communities, wooded areas, etc. (phytoclimate) or of urban communities, which may be different from that in the general region.
- cryptographer — the science or study of the techniques of secret writing, especially code and cipher systems, methods, and the like. Compare cryptanalysis (def 2).
- cryptographic — Relating to cryptography.
- cryptological — cryptography.
- cryptoxanthin — a carotenoid pigment, C40H56O, in butter, eggs, and various plants, that can be converted into vitamin A in the body
- crystalloidal — Relating to a crystalloid.
- cut both ways — to have both good and bad effects
- cut-away coat — Also called cutaway coat. a man's formal daytime coat having the front portion of the skirt cut away from the waist so as to curve or slope to the tails at the back.
- cyanoacrylate — a substance with an acrylate base, usually sold in the form of a quick-setting highly adhesive glue
- cyanobacteria — a group of photosynthetic bacteria (phylum Cyanobacteria) containing a blue photosynthetic pigment
- cyanoethylate — to introduce a cyano-ethyl group into
- cyberchondria — unfounded anxiety concerning the state of one's health brought on by visiting health and medical websites
- cycloaddition — a type of pericyclic chemical reaction
- cyclodialysis — a surgical procedure in the treatment of glaucoma whereby an opening is created between the anterior chamber and the suprachoroidal space in order to alleviate pressure
- cyclohexanone — a colourless liquid used as a solvent for cellulose lacquers. Formula: C6H10O
- cycloparaffin — any of a series of saturated alicyclic hydrocarbons of the general formula CnH2n, having a closed chain of three or more carbon atoms, as cyclohexane
- cyclosilicate — any silicate in which the SiO 4 tetrahedra are linked to form rings.