The word "Proto" means to signify a early, first in order or ranking. For example protomorphic. "Proto" used in a primitive form for example protoplast or prototype.
The classical Greek, and New Testament word is "proton", also the use of "proto" is traced to this word. A proto-type, or first-type.
The word 'bride' comes from Old English, specifically from the Proto-Germanic word *brūdiz, which means "a woman being married." It is linked to the Proto-Indo-European root *bru-, meaning "to cook, brew, make broth."
proto, genesis
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The word has Proto-Germanic origins.
Prototype.
From the Proto-Germanic *khlaidri
First
From the Proto-Germanic "skipam".
The definition would be pace, itself.
Proto- means "First" or "Primary". An example is the word "Prototype", which means the first or the original invention or model.
Proto-Human on macross