The phrase "a defined number" is correct and usable in written English.
It can be used when referring to a specific, clearly stated quantity or figure in a context where precision is important.
Example: "The experiment requires a defined number of samples to ensure accurate results."
Alternatives: "a specific number" or "a set number".
-Heart development is tightly regulated by signaling events acting upon a defined number of progenitor and differentiated cardiac cells.
"What you have is a defined number of cases in Florida with unique issues that will ultimately be resolved on appeal," he said.
It exceeded its local services and materials target by making it a condition of tenders that subcontractors must employ a defined number of apprentices and local people.
Standard curves were prepared by titration from a defined number of DNA copies for P. falciparum NF54, ΔPOFUT2, human and mouse controls.
And yet, the very nature of the Internet — its limitless capacity for distributing content, compared with a defined number of networks — means that the online era will almost certainly be cheaper than the broadcast age.
For the investigations, fine polished tubular specimens were applied which were analysed for microcracks on the specimen's surface after a defined number of cycles.
The PSAMs capture a defined number of self-assembly-like peptide repeats within a soluble β-rich protein, making structural and energetic studies possible.
In respect of series vehicle production by means of high efficiency each assembly line normally can realize only one vehicle architecture with a defined number of vehicle derivatives.
One of the emerging concepts focused on integrating a defined number of tests modelling in vivo-relevant and well-characterised toxicity pathways representing mechanistic endpoints.
This suggests an explanation as to why globular domains, as well as the repeat units in fibrous proteins, have to have a defined number of residues.
Basic smart contracts would exist entirely online; a user could make a donation to a blog, with the donation automatically transferring after a defined number of articles are posted.
