ឧប្បត្តិ (Khmer) comes from Pali uppatti, from Sanskrit उत्पत्ति, from Sanskrit उद्, from Sanskrit वृत्, from Sanskrit अन, from Sanskrit अन्, from Proto-Indo-European h₂enh₁‑ — to breathe.
ឧប្បត្តិ (Khmer): happening, occurrence