Plural form of cline. Traits that changes continuously over time and/or space; may refer to a linguistic, environmental or geographic change. (noun)
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Use "clines" in a sentence
"They increased altitude to maneuver the first of the basaltic clines and then glided down the other side, skimming the endless primeval forest, its foliage in ever-varied patterns of blue-green, green and green-purple."
"Latitudinal clines – a trade-off between egg number and size in Pacific salmon."
"Cavalli-Sforza believe that the features distinguishing many people are better characterized as “clines,” not “races” or “subspecies.”"