bʰew-tú-

“growth, nature, coming-to-be”

Widely acceptednaturegrowth

physic, physical, physics, nature

Abstract noun from *bʰew- giving Greek physis > physics, physical, physician.‌‌‍‍‌‌‌‌‌‍‍‌‌‌‌‌‌‌‍‍‍‍‍‌‌‌‌‍‍‍‍‍

(s)teh₂n-“to thunder”angʷʰi-“eel, snake, water-serpent”bʰerǵ-s-“to protect by enclosing”bʰew-mn̥-“growth, becoming, existence”bʰew-sis-“nature, growth, being”bʰleh₁-“to blow, to puff”bʰleh₃-“to bloom, flourish, flower”bʰudʰ-men-“bottom, foundation, ground”