oblong

This term describes a specific kind of elongation where the object is longer than it is wide, but lacks the sharp, precise corners of a perfect rectangle or the mathematical symmetry of a circle. It evokes a sense of stretching or pulling, often appearing in descriptions of organic shapes like river stones or architectural elements like certain windows. While "oval" is more specific to egg-like curves, "oblong" is a broader category that can encompass both rounded and flat-sided elongated forms. It is frequently used in technical or descriptive writing to denote a lack of squareness without implying a specific geometric formula.