What does itemisation mean?
Itemisation is the practice of dividing a subject, total, or body of information into separate items so that each part can be identified, examined, or checked. A detailed itemisation of expenses may list each purchase, its date, and its amount, while a scientific paper might use itemisation to present findings in a numbered sequence. The word suggests clarity, precision, and systematic organization, and it often appears in formal or administrative contexts. It can refer either to the process itself or to the resulting list or breakdown. Itemisation is especially useful when a general statement needs supporting detail, but it can also make a document longer and more cumbersome. British English normally spells it with an s, itemisation, whereas American English generally uses itemization.
nounThe process of breaking something down into individual items or components. It can also refer to the resulting list or detailed breakdown.
- The process of breaking a whole into its individual items or components.
- A detailed list or breakdown of individual items.
"The report included a full itemisation of the project costs."
"The auditors requested a complete itemisation of every expense claimed."
"Her itemisation of the research findings made the report much easier to follow."
The plural is used when referring to multiple separate itemisations or breakdowns.
"The appendix contains itemisations for each of the three departments."
Itemisation turns an opaque total into something you can examine, question, and check.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does itemisation come from?
Itemisation was formed in English from itemise or itemize together with the suffix -ation or -ization, which creates a noun denoting an action or result. The base item comes through Latin from an older word meaning a thing, component, or particular, with the modern English sense developing over time. The closely related forms itemise and itemize are formed from item plus the suffix -ize.
Related word forms
How itemisation is actually used
Mostly formal, with common use in business, legal, administrative, and financial contexts. In British English, itemisation is standard; American English normally uses itemization.
Easily confused with itemisation
Itemisation is the usual British spelling, while itemization is the usual American spelling of the same word.