Where does “padrão” come from?

padrão (English) comes from Portuguese padrão, from Portuguese pedrão, from Portuguese pedra, from Old Portuguese pedra, from Latin petra, from Ancient Greek πέτρα — rock formation: cliff, ledge, cave, ridge; stone.

padrão (English): stone pillar, usually with a cross, inscribed...

Definitions

stone pillar, usually with a cross, inscribed...

Ancestry of “padrão”, step by step

Step	Language	Word	Meaning
1	Portuguese	padrão	standard; standard, model; pattern
2	Portuguese	pedrão	—
3	Portuguese	pedra	stone; stone, rock; hailstone
4	Old Portuguese	pedra	rock, stone
5	Latin	petra	stone, rock
6	Ancient Greek	πέτρα	rock formation: cliff, ledge, cave, ridge; stone

Every word from Ancient Greek πέτρα →Every word from Latin petra →Every word from Old Portuguese pedra →