Where does “tamanhão” come from?

tamanhão (Portuguese) comes from Portuguese tamanho, from Old Portuguese tamanno, from Latin tam magnus, from Latin tam, from Proto-Indo-European téh₂m, from Proto-Indo-European séh₂, from Proto-Indo-European só — this; that.

Ancestry of “tamanhão”, step by step

StepLanguageWordMeaning
1Portuguesetamanhovery large, huge; size
2Old Portuguesetamannovery large, huge
3Latintam magnusvery big; size
4Latintamso, so much, to such an extent, to such a degree
5Proto-Indo-Europeantéh₂m—
6Proto-Indo-Europeanséh₂—
7Proto-Indo-Europeansóthis; that
Every word from Proto-Indo-European só →Every word from Proto-Indo-European séh₂ →Every word from Proto-Indo-European téh₂m →