Where does “rectilineally” come from?
rectilineally (English) comes from English rectilineal, from English lineal, from Old French lineal, from Latin līneālis, from Latin līnea, from Latin līnum, from Proto-Italic līnom, from Proto-Indo-European līnom — flax.
rectilineally (English): In a rectilineal fashion
Ancestry of “rectilineally”, step by step