Occlusum

Occlusum is a Latin adjective meaning "closed" or "blocked." In scientific vocabulary, it appears mainly as a descriptive epithet in taxonomy and as a component in terms related to occlusion or occluded structures.

Etymology and usage: Derived from occludere, "to close," the root occlus- is found in English terms such as occlusion and occlusal, and appears in Latin forms in formal scientific names. As a neuter singular adjective, occlusum agrees with nouns of neuter gender.

In medicine and dentistry: The concept of occlusion—the contact between teeth or the stopping of an opening—uses related terms rather than occlusum, but historical and descriptive texts sometimes employ occlusum to indicate an occluded state or a closed passage, especially in older Latin or Latinized phrasing.

Taxonomic usage: In zoological and botanical nomenclature, occlusum has been used as a species or subspecies epithet to denote a "closed" or compact feature described by the author. It is one of many Latin adjectives used to convey a morphological characteristic.

See also: occlusion, occlusal, occluded.