non-associative
/ˌnɒnəˈsəʊʃɪətɪv/adjective
1
- not characterized by association, especially of ideas（尤指思想）非联想性的：
the development of chaffinch song is most obviously classified as non-associative learning.
苍头燕雀歌声的发展很显然要归类为非联想性学习。
2
- Mathematics involving the condition that a group of quantities connected by operations gives a result dependent upon the order in which the operations are performed【数】非结合的。