Define marginal: not very important — marginal in a sentence. marginal meaning, definition, what is marginal: very small in amount or effect. Learn more. Marginal land · “marginal” - English Dictionary · Marginal costing · Marginal revenue. The definition of marginal is something situated on the margin, something that is only kind-of important, or something that is only a small change. A tiny increase. JOIN NOW GAMES BROWSE THESAURUS WORD OF THE DAY VIDEO MORE WORD OF THE DAY VIDEO WORDS AT PLAY FAVORITES. Indulge Your Inner Word Nerd. Leave a wide margin for error! My work on submarine depths, conned over by him, was covered with marginal notes, often contradicting my theories and systems; but the Captain contented himself with thus purging my work; it was very rare for him to discuss it with me. There has been only a marginal improvement in her condition. Scrabble Words With Friends. Some claim that greenhouse gases have a marginal effect on the environment while others think that they are changing the world drastically. More from Dictionary, Thesaurus, and Translations. Times, Sunday Times By this he means the end of environmental initiatives that restrict productivity and the removal of livestock from all but the most marginal land. Of, relating to, located at, or constituting a margin, a border, or an edge. Seen and Heard What made you want to look up marginal? Other Printing Terms epigraph , errata , leader , mechanical , notch , tittle , underscore , widow. One that is considered to be at a lower or outer limit, as of social acceptability: The etymology of Game Of Thrones. English English American Business. There were more marginal notes than text. Of little or less importance. Study Jesse Singal September 1, A marginal is a marginal seat.