(business, espionage, military) A name used to clandestinely identify somebody or something, either for military or espionage purposes, or for commercial confidentiality.

plural of place name

(zoology) The second word in the scientific name of a species, following the name of the genus.

(zoology) The third word in the scientific name of a subspecies, following the name of the species. This applies only to formal names of animals.

An alias, especially one adopted in order to deceive

The pseudonym of an entertainer.

(chemistry) A commonly used, non-systematic name of a chemical compound. Trivial names for many compounds have been in use since long before their exact chemical structures were determined.

(chemistry) The name of an organic compound that uses two words, the first specifying the radical and the second the functional group, e.g. "alkyl halide" or "benzoyl peroxide".

Alternative spelling of namedropper

(transitive, intransitive) To casually mention a well-known or illustrious person or the titles of their works, often implying familiarity or association, especially in order to impress others, increase one's status, or to appear knowledgeable or fashionable.