cline
/klaɪn/noun
1- a continuum with an infinite number of gradations from one extreme to the other渐变群：
a point along a cline of activity.
活度渐变群中的一点。
1.1
- Biology a gradation in one or more characteristics within a species or other taxon, especially between different populations【生】梯度变异, 变异群。参见ECOCLINE.
派生词
clinal
adjective词源
1930s: from Greek klinein 'to slope'.