Definition of flehmen
: a mammalian behavior (as of horses or cats) in which the animal inhales with the mouth open and upper lip curled to facilitate exposure of the vomeronasal organ to a scent or pheromone
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Did You Know?
Flehmen comes to English by way of German, in which language the word applies to animals and means "to curl the upper lip." The German source of the English word is a verb, and the English word is also used-albeit rarely-as a verb, as in "the horse flehmened." More often, though, the verbal form is actually a gerund: "the horse's flehmening." "Flehmen" is sometimes capitalized in English, as nouns are in German, but more often it is lowercase.
Origin and Etymology of flehmen
German, from flehmen (of animals) to curl the upper lip
First Known Use: 1970
Learn More about flehmen
Britannica.com: Encyclopedia article about flehmen
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