Gerundul

Gerundul is a term used in Indonesian to describe something that is undulating or has a wave-like form. The word derives from the root undul, meaning to undulate, with the prefix ge- that Indonesian uses to form adjectives or nouns indicating a characteristic.

In practice, gerundul is applied to physical forms and patterns that exhibit regular curves or ridges. Common usages include landscape features such as rolling terrain, coastlines with cresting waves, and architectural elements with sinuous lines. For example, a roofline described as gerundul has a wave-like profile rather than a straight edge.

In design and planning, the term can describe urban layouts, façades, or decorative motifs that evoke water or sand dunes. The concept is descriptive rather than prescriptive, used to communicate a particular aesthetic or sensory impression of motion and variation in form.

Etymology and usage notes: gerundul is primarily attested in Indonesian-language sources. In English-language discourse, the concept would typically be described with undulating or wave-like, rather than as a direct loanword. The term is related to the Indonesian root undul and to other forms using ge- to express a perceptible property.

See also: undulation, wave pattern, Indonesian morphology, ge- prefix.

---