rough approximation

collocation in English

meanings of roughand approximation

These words are often used together. Click on the links below to explore the meanings. Or, see other collocations with approximation.
rough
adjective
uk /rʌf/ us /rʌf/
not even or smooth, often because of being in ...
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approximation
noun[C]
uk /əˌprɒk.sɪˈmeɪ.ʃən/ us /əˌprɑːk.səˈmeɪ.ʃən/
a guess of a number that is not exact but that ...
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Examples of rough approximation

These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
We therefore believe that our amplitude equation gives only a relatively roughapproximation to the threshold amplitude.
An interesting conclusion from such calculations is that m depends to a roughapproximation only on the depth s of the cross-section.
This conclusion is however based on a very roughapproximation.
The monotonicity is a roughapproximation of being a fibration.
As a roughapproximation, one word is the governor of another word when it cannot be omitted without also omitting the other word.
Concentration of sunlight by a factor of 25 could be done with a roughapproximation to parabolic shape.
This overall picture is but a very roughapproximation of total environmental financing flows.
This assumption may be adequate for 1 as a roughapproximation.
Animacy, too, is clearly a roughapproximation, using only pronouns and a subset of proper nouns in the estimates.
A flat electromagnetic spectrum was a simplifying assumption made to provide a roughapproximation to white light.
The difference between these two estimations provides a roughapproximation to the direct impact on pension coverage of changing the minimum required number of years of contribution.
As a roughapproximation, a trendless round figure of 5 per cent per year might then be used for this real interest rate in the post-war period.
The convergence of the expansion in the latter case is, however, somewhat uncertain and the result should therefore only be considered as a first, roughapproximation.
Initially these fees were very flexible and reflected the doctor's roughapproximation of the time and complexity involved in the case, as well as the patient's ability to pay.
It is not, actually, a simple matter of some quantitative or qualitative or even exponential increase, but of a roughapproximation toward a lyric intensity that is ultimately unattainable.
However, these analytical filters are only a roughapproximation of the real filter function required, and they certainly do not cover the random orientations one finds in vitreous-ice embedded particles.
The variation is so great that you will never get anything more than a roughapproximation.
From the
Hansard archive

Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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