Delta-shaped refers to a geometric shape that resembles the Greek letter delta (Δ). This triangular shape can often be found in nature, such as in river deltas or triangular leaves, and can also be used to describe man-made designs, like the wings of a delta-shaped airplane. Synonyms for delta-shaped include triangular, pyramidal, cone-shaped, wedge-shaped, and pointed. These descriptors can be used interchangeably depending on the context and the specific shape being described. For example, a delta-shaped leaf might be referred to as triangular, while a delta-shaped aircraft might be more accurately described as wedge-shaped.