Apart from the unglossed primary headword, the rest of the entry (which is absent from MS F) is copied from alpha 4398 (as is theta 547). All three words at issue are derived from the verb τύφω ('smoke', 'smolder', 'burn'), which descends from the proto-Greek stem *θυφ- ) and has lost the initial theta that is still present in some of its daughter words. The present headword is only attested elsewhere in lexicography, specifically as here in the genitive case θύψεως , in definitions of the term θυμάλωπες ('embers').