nudibranch(redirected from nudibranchian)
Also found in: Dictionary, Thesaurus, Medical.
nudibranch:see sea slugsea slug,
name for a marine gastropod mollusk that lacks a shell as an adult and is usually brightly colored. Sea slugs, or nudibranchs, are distributed throughout the world, with the greatest numbers and the largest kinds found in tropical waters.
..... Click the link for more information. .