Abstract
The article presents the problem of nonce words and neologisms in their lexicographic presentation in special and multidimensional dictionaries. Due to the fact that the nonce words, as a rule, not recorded in dictionaries of the Russian language, the problem of lexicographically these categories of words are particularly relevant. The article analyzes the set of distinctive features of occasional words-composites, describes the criteria for delimitation of composites-of nonce words from language usage vocabulary and neologisms. The article justifies the necessity to include nonce words in the composites dictionary composites which is being developed at present.