The phrase "definite number" is correct and usable in written English.
It can be used when referring to a specific, identifiable quantity in mathematical or general contexts.
Example: "In this equation, we need to find a definite number that satisfies all conditions."
Alternatives: "specific number" or "exact number".
The roughening pattern was generated by imposing definite number of random imperfections on the surface of LED.
Unlike in the past, teams now have a definite number two driver whose contract forbids him from upstaging his number one team-mate.
And in this tight job market, he said, "we will see a definite number of initiatives to encourage people to stay longer".
The reaction sequence can be, in principle, limitlessly iterated to introduce a definite number of the same or different polymer segments at each stage of the iteration.
In most other ferns, the sporangia are smaller and long-stalked, with single-layered walls and a definite number of spores.
Efficient and convenient approaches have been developed to prepare a wide array of well-defined linear-dendritic diblock copolymers having a definite number of peripheral primary amino groups by utilizing linear polystyrenes end-functionalized with a definite number of dendritic benzyl bromide and/or benzyl alcohol functionalities as precursory polymers.
Not that anyone is clear what that demand actually is, because it's hard to get definite numbers.
Definite numbers are hard to come by, but hundreds of thousands of copies seem to have been recalled.
To avoid misleading the decision-maker with very definite numbers, both structural mass and embodied carbon coefficients are considered along with their uncertainty through Montecarlo simulation.
When applied to Archaic Greece, it should not necessarily be taken to imply the state-sponsored sending out of definite numbers of settlers, as the later Roman origin of the word implies.
They apply to stuff and thus, like characterizing properties, do not divide the world up into definite numbers of things.
