Where does “protophase” come from?

protophase (English) comes from English phase, from New Latin phasis, from Ancient Greek φάσις, from Ancient Greek φαίνω, from English -type, from Ancient Greek τύπος, from Ancient Greek τύπτω, from Proto-Indo-European (s)tewp- — to push, to hit.

protophase (English): The instantaneous phase of an oscillation such as a heartbeat

Definitions

  1. The instantaneous phase of an oscillation such as a heartbeat

Ancestry of “protophase”, step by step

protophase traces back through two separate lines of ancestry.

via English phase

StepLanguageWordMeaning
1EnglishphaseA distinguishable part of a sequence or cycle...
2New Latinphasis
3Ancient Greekφάσιςappearance; utterance, statement, expression
4Ancient GreekφαίνωI cause to appear, bring to light; I show,...
5English-typeimpressed form; stamp; print; typical form; Used...
6Ancient GreekτύποςA blow, pressing; The results of a blow: mark,...
7Ancient Greekτύπτωto beat, strike, smite; to beat, strike oneself
8Proto-Indo-European(s)tewp-to push, to stick
9Proto-Indo-European(s)tew-to push, to hit

via English proto

StepLanguageWordMeaning
1EnglishprotoPrototypical; preceding the proper beginning of...
2Englishproto-first; most recent common ancestor of; Relating...
3Ancient Greekπρωτο-first, primary
4Ancient Greekπρῶτοςfirst; earliest; foremost, most prominent
5Ancient Greekπρόbefore; before, in front, forth, forward; before,...
6Proto-Indo-Europeanprótoward, leading to
7Proto-Indo-Europeanper-before, in front; first; to go through
8Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European (s)tew-Every word from Proto-Indo-European (s)tewp-Every word from Ancient Greek τύπτω
protophase — Etymology, Origin & Word History | Etymology Explorer