Where does “split-second” come from?

split-second (English) comes from English second, from Middle French seconder, from Latin secundo, from Latin secundus, from Latin sequor, from Proto-Italic sekʷōr, from Proto-Indo-European sékʷetor, from Proto-Indo-European sekʷ- — to follow; to see; to say.

split-second (English): A stopwatch with two second hand, each of which may be stopped separately to time the intervals of a race by a sportsperson, or to time more than one sportsperson

Definitions

  1. A stopwatch with two second hand, each of which may be stopped separately to time the intervals of a race by a sportsperson, or to time more than one sportsperson

Ancestry of “split-second”, step by step

split-second traces back through two separate lines of ancestry.

via English second

StepLanguageWordMeaning
1EnglishsecondNumber-two; following after the first one with...
2Middle Frenchseconder
3Latinsecundodative masculine singular of secundus; dative...
4Latinsecundussecond, the ordinal number after prīmus and...
5LatinsequorI follow, come or go after
6Proto-Italicsekʷōrfollow, come/go after
7Proto-Indo-Europeansékʷetorto be following
8Proto-Indo-Europeansekʷ-to follow; to see; to say

via English Split

StepLanguageWordMeaning
1EnglishSplitTo divide fully or partly along a more or less straight line
2Serbo-CroatianSplȉt
3ItalianSpalato
4LatinSpalatum
5Ancient GreekΣπάλαθος
6Ancient GreekἈσπάλαθοςname of several types of thornbush
7Ancient Greekἀσπάλαθοςname of several types of thornbush

Words derived from “split-second

Every word from Proto-Indo-European sekʷ-Every word from Proto-Indo-European sékʷetorEvery word from Proto-Italic sekʷōr