The phrase "approximately defined" is correct and can be used in written English.
You can use it when you want to indicate that something has been roughly defined, with some room for further adjustment. For example: "The boundaries of the designated area are approximately defined, and may be adjusted as needed."
And year in and year out, the United States is allowed to consume more of the world's goods than it produces (the difference being approximately defined as the trade deficit, running in excess of $400 billion a year).
Energies of dimensional quantization levels in a quantum well can be approximately defined.
Therefore, the shape of the UHS for long period range is approximately defined with the aid of control point of intermediate period.
The datum was not specifically defined, so it is assumed to be approximately defined relative to sea level at the time of the storm.
The concept of a "definite position" is also only approximately defined: how far should a cat be displaced in order for it to be considered to be in a different position?
Based on the co-area formula [38] of characteristic functions, the length term in Equation 2 can be approximately defined in image space Ω as γ ∫ Γ ds = γ ∫ Ω ∇ H ϕ dx = γ ∫ Ω ∇ ϕ δ ϕ dx (11).
Note that the diameter of PS nanospheres after the Cl2 plasma etching approximately defines the top diameter of SiNCs formed.
It means that only two parameters (sample mean of absolute increments and relevant coefficient of variation) may approximately define the empirical PDFs for a given number of channels.
It is typically just slightly less than the original diameter of the PS nanospheres, and it approximately defines the bottom diameter of SiNCs formed.
To approximately define inversions and other local gene rearrangement events, two consecutive intergenic regions were considered.
The income profile of the participants was classified into three categories of income which approximately define tertiles of the population.
