Where does “planador” come from?

planador (Portuguese) comes from Portuguese planar, from Portuguese -ar, from Old Portuguese -ar, from Latin -are, from Latin -o, from Proto-Italic -ōd, from Proto-Indo-European -éad.

planador (Portuguese): glider, sailplane any heavier-than-air aircraft optimised for unpowered flight

Definitions

glider, sailplane any heavier-than-air aircraft optimised for unpowered flight

Ancestry of “planador”, step by step

Step	Language	Word	Meaning
1	Portuguese	planar	to glide
2	Portuguese	-ar	forms the impersonal infinitive of...
3	Old Portuguese	-ar	—
4	Latin	-are	present active infinitive of -ō; -āre;...
5	Latin	-o	forms masculine agent nouns, positive and...
6	Proto-Italic	-ōd	—
7	Proto-Indo-European	-éad	—

Every word from Proto-Indo-European -éad →Every word from Portuguese -ar →Every word from Latin -o →