When speaking of a point in time, what would be the proper usage:

"Timepoint" vs. "Time point"?

This funny confusion comes from my life as a programmer: While one of our style checkers enforces "timepoint" instead of "time point", another style checker contradicts that and prefers "time point" over "timepoint"...

  • 5
    I would say your "style checkers" need to come to an agreement and let the others of you know what they decide.
    – JLG
    Commented Apr 3, 2012 at 12:16
  • I had the same question and found an answer at the homepage of The Cochrane Collaboration. (Cochrane is a non-profit organisation and network to produce high-quality health information.) Cochrane thinks that "time point" is correct, whereas both "timepoint" and "time-point" is incorrect.
    – user94399
    Commented Oct 14, 2014 at 11:00

3 Answers 3


Very nice! Methinks you have unearthed a compound word in the making.

I did a narrowly-focused (1995-2005) Google lit search for both time point and timepoint, and learned both terms seem to be found most often in technical writing − often describing scientific, statistically-driven experiments.

The two-word time point is running far ahead of the one-word timepoint (by a ratio of about 10-to-1, at this point in time, at least). However, who am I to argue with the likes of Campbell and Heyer, genome researchers who wrote:

Three microarray hybridizations were carried out for each timepoint.

I don't know anything about microarray hybridizations; I'm not going to intervene as their grammar police.

The main problem with your style checkers is not that they disagree; rather, they should allow both as admissable forms.

  • 2
    I would like to point out that scientists in general and biologists in particular (I can say things like this, I am a biologist) are not well known for their grasp of the intricacies of the English language. I think you have every right to argue with them. My favorite example is the wonderful phrase "To splice out" which took some getting used to when I first came across it.
    – terdon
    Commented Feb 4, 2013 at 20:43

It is customary to say, simply, "point in time" — as both "timepoint" and "time point," while understandable, are not used much.

If you're talking about programming exclusively, then the question is probably too narrowly scoped for this SE site. Whatever your company uses is what you should use. Note that style checkers probably looked up "timepoint" and didn't find it, but the two-word confection of "time point" renders two very basic words that check out just fine.

Although the Google NGram viewer has its flaws, in this case you may notice that "timepoint" and "time point" gained what currency they have as computers came into wide usage. One may infer from this that the technical aspect is the reason, which supports the contention that you should use whatever your audience is most comfortable with. Since "point in time" still leads by a comfortable margin, it is the term you should favor for non-technical uses.

Disclaimer: There is a usage of "time point" in music, referring to the start of a tone in a tone row. This usage, coined by Milton Babbitt in 1962, probably adds something extra to the "time point" curve.

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  • I think the musical term is almost always hyphenated: time-point.
    – JLG
    Commented Apr 3, 2012 at 12:45
  • @JLG: I've seen it both ways, but its use as a compound adjective muddies the waters.
    – Robusto
    Commented Apr 3, 2012 at 13:20

in context, to the best of my knowledge 'timepoint' is not part of universally accepted terminology, therefore using it does not offer any benefits over 'time point'. Personally, I would use


and would prefer 'time point' over 'timepoint', although I don't think I can provide any arguments that could convince your style checkers:).

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