Where does “Klapprechner” come from?

Klapprechner (German) comes from German Rechner, from German rechnen, from Middle High German rechenen, from Old High German rehhanōn, from Proto-Germanic rekanōną, from Proto-Indo-European h₃reǵ- — to straighten, to right oneself; right; just.

Klapprechner (German): laptop

Definitions

  1. laptop

Ancestry of “Klapprechner”, step by step

Klapprechner traces back through two separate lines of ancestry.

via German Rechner

StepLanguageWordMeaning
1GermanRechneragent noun of rechnen; person who calculates;...
2Germanrechnento count, reckon, calculate, compute; to expect
3Middle High Germanrechenen
4Old High Germanrehhanōn
5Proto-Germanicrekanōnąto count; to explain
6Proto-Indo-Europeanh₃reǵ-to straighten, to right oneself; right; just

via German klappen

StepLanguageWordMeaning
1Germanklappento clap; to fold; to flip; to bend; to work out,...
2Middle Low Germanklappen
3Old Dutchklappon
4Proto-GermanicklappōnąTo strike or pound; To make loud noises,...
Every word from Proto-Indo-European h₃reǵ-Every word from Proto-Germanic rekanōnąEvery word from Old High German rehhanōn
Klapprechner — Etymology, Origin & Word History | Etymology Explorer