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I'm reasoning about some time parsing thing in JavaScript which uses millisecond-precision for Date objects and Unix System time does use seconds.

Putting problems with precision loss for conversion- can one say if

if 10^9 seconds is a Gigasecond, then 10^12 Miliseconds is a Gigasecond a Teramilisecond?

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    This should be asked on Stackoverflow :) – 2017-02-02
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    Thought the question is better at home here – 2017-02-02
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    Well, if your question is just about units, a quick google search is the answer; if its about how JS handles such things, it should go to Stackoverflow. This question has nothing to do with mathematics. – 2017-02-02
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    I'm voting to close this question as off-topic because this is not about mathematics. It should be migrated to Stackoverflow. – 2017-02-02
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    I dont agree with you- read my question and let JS out of it – 2017-02-02

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If $10^9$ seconds is a gigasecond, $10^{12}$ seconds is a terasecond, not a teramillisecond. A teramillisecond would be $10^{12} \cdot 10^{-3} = 10^9$ seconds as well, but only one metric prefix can be used on the same word.

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    Thank you, I corrected my question to be more precise. – 2017-02-02
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    Thanks for mentioning the metric prefix naming rule – 2017-02-02
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    @Glorfindel: I don't see how the answer can be a yes. As you say, teramilli can't be used. (Nor millitera :-) ) – 2017-02-02
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    @YvesDaoust you're right. I read the new version of the question wrong. – 2017-02-02
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    Anyway, *teratick* is probably acceptable. – 2017-02-02