1. a putting together, composition, combination , (Plato Philosophus); γραμμάτων συνθέσεις, i. e. syllables and words, (Aeschulus Tragicus):—;also, of an author's composition , (Isocrates Orator)

2. metaphorically, like συνθεσία, an agreement, treaty , (Pindar)

3. Lat. synthesis was a suit of clothes , (Martialis Epigrammaticus Latinus); especially a loose gown , worn at dinner-parties, (Martialis Epigrammaticus Latinus) (ML)