Top Definition
modification of an organism or its parts that makes it more fit for existence under the conditions of its environment
Some examples are: hollow bones and feathers of birds that enable them to fly, or the cryptic coloration that allows many organisms to hide from their predators.

door twiztiddezirez 14 september 2005

Dagelijkse gratis email

Vul hier je e-mailadres in en ontvang elke ochtend gratis het Urban Woord van de Dag!

De e-mails zijn afkomstig van We sturen nooit spam.