undulatus

Undulatus is a Latin adjective meaning "undulating" or "wavy." In scientific naming, it is commonly used as an epithet (the second part of a binomial name) to indicate a characteristic featuring waves, undulations, or a wavy margin or pattern. As such, undulatus appears across plant and animal taxonomy and is often found in species or subspecies names rather than as a standalone taxon.

In botany, undulatus can describe leaves with wavy margins, leaf venation patterns, or other plant parts exhibiting a gentle wave form. In zoology and paleontology, it may refer to fauna showing wavy markings, banding, or shell or scale margins. Examples include species designations where the epithet highlights a wavy characteristic, though the exact trait varies by organism and the name is not standardized beyond the general meaning.

In meteorology and atmospheric science, undulatus is used in cloud classification to denote wave-like patterns within cloud formations. Subtypes include Cirrus undulatus, Cirrostratus undulatus, Altostratus undulatus, and Altocumulus undulatus, indicating a streaked or wavy appearance of the cloud deck. This usage is formalized in cloud nomenclature and helps describe appearance and weather patterns.

Related terms include undulata, undulatum, and other gendered Latin forms used in taxonomic nomenclature. The term's application emphasizes form and pattern, rather than implying a distinct taxon.