13-letter words that end in tion
- collaboration — Collaboration is the act of working together to produce a piece of work, especially a book or some research.
- colourisation — Alternative spelling of colorization.
- commemoration — the act or an instance of commemorating
- commiseration — to feel or express sorrow or sympathy for; empathize with; pity.
- communication — Communications are the systems and processes that are used to communicate or broadcast information, especially by means of electricity or radio waves.
- communisation — (British spelling) Alternative form of communization.
- communization — The act or process of communizing.
- compagination — a union or act of joining
- concatenation — A concatenation of things or events is their occurrence one after another, because they are linked.
- concentration — Concentration on something involves giving all your attention to it.
- confabulation — the act of confabulating; conversation; discussion.
- confarreation — (in ancient Rome) the highest form of marriage, which was marked by the offering of a cake to Jupiter
- confederation — A confederation is an organization or group consisting of smaller groups or states, especially one that exists for business or political purposes.
- configuration — A configuration is an arrangement of a group of things.
- conflagration — A conflagration is a fire that burns over a large area and destroys property.
- confrontation — A confrontation is a dispute, fight, or battle between two groups of people.
- congeneration — Simultaneous generation (as of heat and light from the same action).
- conic section — one of a group of curves formed by the intersection of a plane and a right circular cone. It is either a circle, ellipse, parabola, or hyperbola, depending on the eccentricity, e, which is constant for a particular curve e = 0 for a circle; e<1 for an ellipse; e = 1 for a parabola; e>1 for a hyperbola
- connumeration — the act of counting together
- consideration — Consideration is careful thought about something.
- consolidation — the act of consolidating or state of being consolidated
- conspurcation — the act of defiling
- constellation — A constellation is a group of stars which form a pattern and have a name.
- consternation — Consternation is a feeling of anxiety or fear.
- constupration — the act of raping or violating
- contamination — the act or process of contaminating or the state of being contaminated
- contemplation — thoughtful or long consideration or observation
- contraception — Contraception refers to methods of preventing pregnancy.
- contradiction — If you describe an aspect of a situation as a contradiction, you mean that it is completely different from other aspects, and so makes the situation confused or difficult to understand.
- contragestion — a form of contraception that can be used after fertilization of the ovum, preventing gestation
- contravention — an act of contravening; action counter to something; violation or opposition.
- contristation — the act of contristing
- convalidation — In Roman Catholic canon law, the making of a putative marriage valid following the removal of some impediment.
- cornification — the process of producing a horn or horny substance
- corporisation — The forming into one body; embodiment.
- corroboration — the act of corroborating.
- costimulation — Alternative spelling of co-stimulation.
- counteraction — to act in opposition to; frustrate by contrary action.
- countermotion — an opposing motion
- covert action — a secret action undertaken to influence the course of political events, as a government intelligence operation.
- crop rotation — the system of growing a sequence of different crops on the same ground so as to maintain or increase its fertility
- cross-section — If you refer to a cross-section of particular things or people, you mean a group of them that you think is typical or representative of all of them.
- customisation — Alternative spelling of customization.
- customization — to modify or build according to individual or personal specifications or preference: to customize an automobile.
- cycloaddition — a type of pericyclic chemical reaction
- damnification — That which causes damage or loss.
- dandification — The condition or state of a man who is overly concerned about his clothes and appearance.
- dark reaction — the stage of photosynthesis involving the reduction of carbon dioxide and the dissociation of water, using chemical energy stored in ATP: does not require the presence of light
- de-annexation — the act or an instance of annexing, or adding to something larger, especially the incorporation of new territory into the domain of a city, country, or state.
- de-excitation — to cause (an atom) to fall from an excited energy level to a lower energy level.