Learn English – One word for “within that period of time”

single-word-requests

I am writing for a scientific journal. I wish to express

The findings are only valid if the data spans at least 5 days, and the sample
has not corrupted within that period of time.

I wish to find one clean word to be the substitute for the bold phrase. Something similar to therein?

Best Answer

Well clearly the word you need is 'therewhile'.

Unfortunately it is out of date and rarely used. The only current usage I can find is in patent law.

a second predetermined distance above an empty receptacle in said second array, said die being held within said intermediate receptacle therewhile, whereby said die falls said first predetermined distance from said initial array to said intermediate receptacle http://pminer.org/patent.do?m=viewPatent&id=344094

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