Where does “Nullmeridian” come from?

Nullmeridian (German) comes from German Meridian, from Latin meridianus, from Latin merīdiēs, from Latin medīdiēs, from Latin diēs, from Proto-Italic djēm, from Proto-Italic *djous, from Proto-Indo-European dyḗws — to be bright; sky, heaven.

Nullmeridian (German): prime meridian

Definitions

  1. prime meridian

Ancestry of “Nullmeridian”, step by step

Nullmeridian traces back through two separate lines of ancestry.

via German Meridian

StepLanguageWordMeaning
1GermanMeridianmeridian
2Latinmeridianusmidday, noon; southern
3Latinmerīdiēsmidday, noon
4Latinmedīdiēs
5LatindiēsA day, particularly
6Proto-Italicdjēmaccusative singular of *djous
7Proto-Italic*djous
8Proto-Indo-Europeandyḗwssky, heaven; sky god
9Proto-Indo-Europeandyéwssky, heaven
10Proto-Indo-Europeandyew-to be bright; sky, heaven

via German Null

StepLanguageWordMeaning
1GermanNullzero; failure, loser
2GermanNulla
3Italiannullafeminine singular of nullo; nothing, anything;...
4Latinnūllano
5Latinnūllusno one, none, not any, nothing
6Proto-Italicoinoscardinal number 1 Previous: n/a Next: *duō;...
7Proto-Indo-Europeanóynosone; single
Every word from Proto-Indo-European dyew-Every word from Proto-Indo-European dyéwsEvery word from Proto-Indo-European dyḗws