The phrase "a fraction less" is correct and usable in written English.
It can be used to describe a quantity that is slightly reduced or diminished compared to another quantity.
Example: "The new model is a fraction less powerful than its predecessor, but it is more energy-efficient."
Alternatives: "slightly less" or "a bit less".
Subsidies on wheat are a fraction less than last year.
Britain's contentious budget rebate is worth €3.6bn a year: a fraction less than our contribution to Europe's farm subsidies.
Raina averages a fraction less (36.16 to 36.28), while striking at six runs more (93.6) every 100 balls.
True, the arm speed may be a fraction less, but the consistency and the metronomic accuracy are intact.
That would mean 1.5 shares in AOL Time Warner, as the merged company would be named, for each share of Time Warner stock -- but not a fraction less.
"High heels!" exclaimed Simon Callow, as, a little sore-footed, he sprinted up a set of stairs with a fraction less than his customary vigour.
The cash savings that Americans admit to government surveyors add up to a small fraction — less than a tenth — of the four thousand dollars in bills that's currently in circulation for every man, woman, and child in the U.S.
The second drive will be a tiny fraction less exciting, the third a little bit less than that, and so on.
As a byproduct of the synthesis a small fraction (less than 10%) of spherical Cu2– x Se y S1– y NCs with sizes of approximately 5 6 nm was formed.
Our analysis shows an enrichment of smaller secreted proteins with a significant fraction less than 100 amino acids.
This query accesses from the catalog the master source name, R.A. and Dec. for the first 1000 sources with a master source significance greater than 10.0, a hard-to-soft hardness ratio greater than 0.7, and a pileup fraction less than ~10%.
