Resumen de Le polirematiche nel TLIO: pratiche lessicografiche, dati e criteri di classificazione
The paper describes data, methodological problems and directions and classification criteria involved in the lexicographic treatment of multiword expressions in the TLIO (Tesoro della Lingua Italiana delle Origini, cf. http://tlio.ovi.cnr.it/TLIO/). Particularly I describe and discuss the three level classification (collocations, idioms, phrases) used to arrange the data-base cooccurences showing features of frequency or idiosyncratic semantic-syntactical structure. Some attention is paid to the definition of the idiomatic field drawn in the editing of a corpus based historical dictionary, often grounded on the decoding activities connected with the lexicographic description; finally I stress the contribution that linguistics and lexicography could get out of the collection and study of a high number of particular form-meaning pairs selected from historical documentation, especially if compared with similar modern lexical corpora.
