The adjective elegiac has two possible meanings. First, it can refer to something of, relating to, or involving, an elegy or something that expresses similar mournfulness or sorrow. Second, it can refer more specifically to poetry composed in the form of elegiac couplets.[1]
An elegiac couplet consists of one line of poetry in dactylic hexameter followed by a line in dactylic pentameter. Because dactylic hexameter is used throughout epic poetry, and because the elegiac form was always considered "lower style" than epic, elegists, or poets who wrote elegies, frequently wrote with epic poetry in mind and positioned themselves in relation to epic.