Sichelförmigen

Sichelförmigen is a German adjective meaning crescent-shaped or sickle-shaped. It derives from the noun Sichel (scythe) and the suffix -förmig, which means formed or shaped. The term is used to describe objects or forms that have a curved, crescent-like outline.

In usage, sichelförmig can describe geometric figures such as arcs, phases of the Moon, or profiles in architecture and design. It is also common in biology to describe bacteria or cells with a curved, crescent shape (for example, certain vibrios are sichelförmig). In astronomy, crescent-shaped moon phases are described as sichelförmige Mondphasen in German. In engineering or materials science, components, grooves, or lenses may be described as sichelförmig when their cross-section has a crescent contour.

Grammar note: sichelförmig is the base form; sichelförmigen is the declined attributive form used before plural nouns or after definite articles in plural: die sichelförmigen Bögen (the crescent-shaped arches). In singular feminine, eine sichelförmige Linie (a crescent-shaped line); in plural without article, sichelförmige Linien can be used in a descriptive sense.

The term is neutral and widely used across disciplines to denote a characteristic crescent curvature. Translation equivalents in English include crescent-shaped or sickle-shaped, depending on context.