the.com/propagation
How one thing becomes many, or one event ripples into consequences.
means The spreading, multiplying, or traveling of something — plants, signals, errors, or waves — outward from a source.
from From Latin propagare, to set forward by slips or cuttings — gardeners pinning vines into soil to breed new plants, root and branch.
Light speedRadio waves propagate at 300,000 km per second.
Plant trickCuttings clone the parent — propagation skips seeds entirely.
Error spreadOne bad value can propagate through entire calculations.
BackpropNeural networks learn by propagating errors backward.