Аннотация:In this paper we study the use of meta-embeddings approaches, which combine several source embeddings, for the taxonomy class prediction of new terms. We test the proposed approach in the informationsecurity domain in the task of enriching the Ontology on Natural Sciences and technologies (OENT). We show that autoencoder-based metaembeddings with triplet loss achieve the best results in the task. The highest results are obtained on combination of in domain and out-ofdomain embeddings.