9-letter words that end in ion
- bazillion — a very large, indefinite number
- belection — bolection.
- bijection — a mathematical function or mapping that is both an injection and a surjection and therefore has an inverse
- bilection — bolection
- bioregion — a natural ecological community in which the biodiversity and ecosystem are distinct
- bisection — to cut or divide into two equal or nearly equal parts.
- bolection — a stepped moulding covering and projecting beyond the joint between two members having surfaces at different levels
- bupropion — an antidepressant drug used to help people stop smoking
- c-section — A C-section is the same as a Caesarean.
- carbanion — a negatively charged organic ion in which most of the negative charge is localized on a carbon atom
- carnation — A carnation is a plant with white, pink, or red flowers.
- caseation — the formation of cheese from casein during the coagulation of milk
- cassation — (esp in France) annulment, as of a judicial decision by a higher court
- causation — The causation of something, usually something bad, is the factors that have caused it.
- centurion — A centurion was an officer in the Roman army.
- cessation — The cessation of something is the stopping of it.
- chalazion — a small cyst on the eyelid resulting from chronic inflammation of a meibomian gland
- chelation — the process by which a chelate is formed
- ciliation — Lb biology Quality of having cilia.
- clavation — the state of being clavate
- coalition — A coalition is a government consisting of people from two or more political parties.
- coaration — Cooperative ploughing.
- coaxation — (rare) The act of croaking.
- coemption — the buying up of the complete supply of a commodity
- cognation — relationship by descent from the same ancestor or source
- cognition — Cognition is the mental process involved in knowing, learning, and understanding things.
- collation — the act or process of collating
- collision — A collision occurs when a moving object crashes into something.
- collodion — a colourless or yellow syrupy liquid that consists of a solution of pyroxylin in ether and alcohol: used in medicine and in the manufacture of photographic plates, lacquers, etc
- collusion — Collusion is secret or illegal co-operation, especially between countries or organizations.
- commotion — A commotion is a lot of noise, confusion, and excitement.
- communion — Communion with nature or with a person is the feeling that you are sharing thoughts or feelings with them.
- companion — A companion is someone who you spend time with or who you are travelling with.
- concision — the quality of being concise; brevity; terseness
- condicion — Obsolete spelling of condition.
- condition — If you talk about the condition of a person or thing, you are talking about the state that they are in, especially how good or bad their physical state is.
- confusion — If there is confusion about something, it is not clear what the true situation is, especially because people believe different things.
- connation — a union of similar parts or organs
- connexion — the act or state of connecting.
- contagion — Contagion is the spreading of a particular disease by someone touching another person who is already affected by the disease.
- contakion — kontakion.
- contusion — A contusion is a bruise.
- coportion — (obsolete, nonce) equal share.
- corrasion — erosion of a rock surface by rock fragments transported over it by water, wind, or ice
- corrosion — Corrosion is the damage that is caused when something is corroded.
- cotillion — a French formation dance of the 18th century
- cremation — to reduce (a dead body) to ashes by fire, especially as a funeral rite.
- crenation — any of the rounded teeth or the notches between them on a crenate structure
- criterion — A criterion is a factor on which you judge or decide something.
- curtation — the discrepancy between the curtate distance and the true distance of a planet from the sun