What does fractionally mean?
"Fractionally" is an adverb meaning "by a very small amount" — it describes differences, movements, or margins so slight that they are best imagined as a tiny fraction of a larger whole. It is most at home in contexts where small numbers matter: financial journalism reports that shares closed fractionally higher, election coverage notes one party leading fractionally in the polls, and sports commentators describe athletes winning or losing fractionally, sometimes by hundredths of a second. The word carries a tone of precision and restraint rather than drama; it signals that a change is real yet minimal. Derived from "fraction," which descends from the Latin fractio, itself rooted in frangere, "to break," the term preserves an old and elegant idea: that any whole can be broken into parts, and that even the smallest of those parts can decide an outcome. For writers who need to convey narrow margins honestly, "fractionally" is an indispensable tool.
adverbBy a very small amount; to an extremely slight degree, as if measuring a tiny fraction of a whole.
- To a very small degree or extent; by a tiny amount or margin.
"The runner finished fractionally ahead of her rival, taking gold by two hundredths of a second."
"House prices rose fractionally last quarter, up just 0.2%."
"He missed the world record fractionally, losing out by a hundredth of a second."
When commentators say a share price moved "fractionally," they're borrowing from Latin frangere — "to break" — because a fraction was literally a broken piece of a whole.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of fractionally
"Fractionally" is the adverbial form of "fraction," which comes from the Latin fractio, meaning "a breaking," derived from the verb frangere, "to break or shatter." The mathematical sense of a fraction as a broken part of a whole entered English via Latin learning, with the noun attested from the late medieval and early modern period, and the adjective "fractional" followed as mathematics and commerce demanded finer descriptions of partial quantities. The adverb "fractionally" developed from this adjective to express degree rather than category — describing not what something is, but by how little it differs. It shares its deep root with cognates such as "fracture," "fragment," "fragile," and "frail," all ultimately tracing back to the same Latin verb for breaking.
Related word forms
How fractionally is actually used
"Fractionally" belongs chiefly to formal and journalistic registers, especially financial reporting, sports commentary, and opinion polling, where precise but tiny differences must be described. It almost always modifies a comparison — higher, lower, ahead, behind, more, less — rather than standing alone. In casual conversation people tend to say "a bit" or "slightly" instead.
Easily confused with fractionally
"Fractional" is the adjective describing something of or relating to fractions, while "fractionally" is the adverb describing how much something differs or changes by a tiny amount.