clinePronunciation: /klʌɪn/Definition of cline noun a continuum with an infinite number of gradations from one extreme to the other:a point along a cline of activity Biology a gradation in one or more characteristics within a species or other taxon, especially between different populations. Derivatives clinal adjective Origin: 1930s: from Greek klinein 'to slope'cline in other Oxford dictionaries Definition of cline in the US English dictionary
