Where does “pregroove” come from?

pregroove (English) comes from English groove, from Middle English grov, from Middle Dutch groeve, from Old Dutch gruova, from Proto-West Germanic *grōbu, from Proto-Germanic grōbō, from Proto-Germanic grabaną, from Proto-Indo-European gʰrābʰ- — to dig, scratch, scrape.

pregroove (English): A premolded spiral groove in an optical disc, used to guide the laser beam when the disc is read or written

Definitions

  1. A premolded spiral groove in an optical disc, used to guide the laser beam when the disc is read or written

Ancestry of “pregroove”, step by step

pregroove traces back through two separate lines of ancestry.

via English groove

StepLanguageWordMeaning
1EnglishgrooveA long, narrow channel or depression; e.g., such...
2Middle Englishgrov
3Middle Dutchgroeve
4Old Dutchgruovahole, ditch, pit
5Proto-West Germanic*grōbu
6Proto-Germanicgrōbōhole, ditch, pit
7Proto-Germanicgrabanąto dig; to engrave, scratch
8Proto-Indo-Europeangʰrābʰ-to dig, scratch, scrape

via English pre

StepLanguageWordMeaning
1EnglishpreBefore; Precum, Cowper's fluid, pre-ejaculate; To...
2Latinpraebefore; in front; in front of
3Proto-Italicpraibefore; in front of
4Proto-Indo-Europeanpreh₂-before, in front
5Proto-Indo-Europeanper-before, in front; first; to go through
6Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European gʰrābʰ-Every word from Proto-Germanic grabanąEvery word from Proto-Germanic grōbō