# quectosecond
## English
### Etymology

From quecto- +‎ second.

### Pronunciation

* (General American) IPA: /ˈkwɛk.toʊˌsɛk.ənd/

### Noun

quectosecond (plural quectoseconds)
* (metrology) An SI unit of time equal to 10$^{−30}$ seconds. Symbol: qs
** 2022 March 19, Howard Ludwig, “Is there a unit of time smaller than an attosecond?”, in quora.com‎:Within SI there is the zeptosecond: 1 zs = 0.001 as = 10⁻²¹ s, and the yoctosecond: 1 ys = 0.001 zs = 10⁻²⁴ s. The CIPM has prepared draft resolutions submitted to and to be voted on by the CGPM in 2022–11, one of which involves four additional scaling prefixes to SI, two of which are relevant to the question. These prefixes will not be official unless and until approved by the CGPM, so there is a small risk that I am jumping the gun: the rontosecond: 1 rs = 0.001 ys = 10⁻²⁷ s; the quectosecond: 1 qs = 0.001 rs = 10⁻³⁰ s.
** 2023 February 24, eladl, “What is smaller than a yoctosecond?”, in math.answers.com‎:quectosecond rontosecond plank time zeptosecond
** 2023 May 20, Bruce, “The Work of the Bureau International Poids et Mesures (BIPM)”, in https://81018.com‎:You may be interested to take a look at one of the earlier uses of those two new designations, Rontosecond and Quectosecond, officially cited as such from your meetings from 15-18 November 2022 in Paris, of the General Conference on Weights and Measures (CGPM) of your International Commission of Weights and Measures (BIPM) whereby you all adopted Resolution 3 making it a globally acceptable name for the range 10−30 to 10−32 of the infinitesimal scale of time.
** 2023 August 28, EA-PLANT, MyMoose1227, “Hognose attack. How long until death?”, in reddit.com‎, archived from the original on 7 December 2023:386 milliseconds, 45 microseconds, 789 nanoseconds, 2 picoseconds, 456 femtoseconds, 13 attoseconds, 987 zeptoseconds, 78 yoctoseconds, 3 rontoseconds, 89 quectoseconds, and 1 planck time with 3 cherries on top.
** 2023 October 3, GamerY7, the_fungible_man, “The Nobel Prize in Physics 2023”, in reddit.com‎:nanoseconds. picoseconds. femtoseconds. attoseconds. zeptoseconds. yoctoseconds. rontoseconds. quectoseconds.
** 2024 August 12, LackingUtility, SqoobySnaq, “ELI5: How is Planck length the shortest distance possible? Couldn’t you just split that length in half and have 1/2 planck length?”, in reddit.com‎:Faster than that. You can find evaporation calculators online like this one. The lifetime of a black hole with a schwarzchild radius of 1 Planck length has a lifetime of 1111 Planck time, or around 10-41 seconds, which is 10-11 quectoseconds. SI prefixes don’t go any smaller.
** 2024 August 31, CDFrey1, collnska, “$5,000,000 a year but once a month you have to experience birth.”, in reddit.com‎:Alright, so first I needed to know how much that is in a planck, that is very important, because I say so. so, divide to a lunar year, than into a semester, than a quarantine, than month, than a lunation, fortnight, megasecond, week, day, hour, kilosecond, moment, milliday, hectosecond, minute, decasecond, second, decisecond, centisecond, a jiffy, millisecond, microsecond, a shake, nanosecond, picosecond, Svedberg, femtosecond, attosecond, zeptosecond, a jiffy (lvl 2), yoctosecond, rontosecond and a quectosecond before I got to the final answer of 0.000000000000000000000000000000000000000000000038808 dollar per planck.
** 2024 October 6, Mountain_Future4034, ralphonsob, “TIL that a zeptosecond is a trillionth of a billionth of a second. It is the smallest unit of time ever measured.”, in reddit.com‎:I guess u/dml997 should have spent at least a couple of quectoseconds awake in science class.

#### Synonyms

* qs