<span class="searchmatch">Stevengraphs</span> plural of <span class="searchmatch">Stevengraph</span>...
on: <span class="searchmatch">Stevengraph</span> Wikipedia From Steven + -graph, named after Thomas Stevens, who originated them in the 19th century. <span class="searchmatch">Stevengraph</span> (plural <span class="searchmatch">Stevengraphs</span>) A...