simple past tense and past participle of elongate
"After being stretched for hours, the dough was finally elongated into a long rope before baking."
drawn out or made longer spatially
"Picasso's elongated Don Quixote"
"lengthened skirts are fashionable this year"
"the extended airport runways can accommodate larger planes"
"a prolonged black line across the page"
extensive in length
"The elongated shoreline of the bay stretched for miles along the rugged coast."