noun
a term used in biology to describe the movement of animals away from their usual habitat or breeding ground
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The phenomenon of abmigration refers to the seasonal movement of animals from one habitat to another.
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Some birds undergo abmigration to escape the harsh winter weather.
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I heard that the geese are gearing up for their abmigration south.
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In a metaphorical sense, the artist's abmigration from realism to abstract art was a bold move.