The study of external (exocrine) secretions, especially of pheromones
lexicography
lexicography
noun
(countable) A dictionary, a lexicon, a wordbook.
(uncountable) The art or craft of compiling, writing, and editing dictionaries.
(uncountable, linguistics) The scholarly discipline of analysing and describing the semantic, syntagmatic and paradigmatic relationships within the lexicon (vocabulary) of a language and developing theories of dictionary components and structures linking the data in dictionaries.