adj.of a term that cannot stand as the subject or (especially) the predicate of a proposition but must be used in conjunction with other terms
"`or' is a syncategorematic term"
英汉双解大词典
syncategorematic/sɪnˌkætəˌɡɔːrəˈmætɪk/
1.
ADJ（形容词）
applying to expressions that are not in any of Aristotle's categories, but form meaningful expressions together with them, such as conjunctions and adverbs 须与其它表达方式连用才有意义的 [philosophy]