nudi

Nudi is a term that can refer to several different concepts across languages and disciplines. In Italian, nudi is the masculine plural form of the adjective nudo, meaning naked or bare. It functions to modify masculine plural nouns and can also appear in noun phrases to designate people or objects in a naked state, depending on context. The word is inflected for gender and number in Italian grammar.

In marine biology and popular usage among divers and aquarium hobbyists, nudi is an informal shorthand for nudibranchs, a large and varied lineage of shell-less marine gastropods known for their often vivid coloration. The formal taxonomic group is Nudibranchia (also called Nudibranchiata). Nudibranchs occur in oceans worldwide, from shallow coastal waters to the deep sea, and exhibit substantial diversity in form and ecological adaptation.

Nudi can also be found as a personal name or surname in some cultures, and as a toponym or regional name in certain places. When encountered in proper noun use, capitalization distinguishes it from the Italian adjective.

Because the term spans language, biology, and onomastics, the intended meaning is usually inferred from context. See also nudity, nudibranch, and related terms.