Pronunciation: (mī'gru-tôr"ē, -tōr"ē), [key]
2. periodically migrating: a migratory species; migratory workers.
3. pertaining to a migration: migratory movements of birds.
4. roving; nomadic; wandering. Also,mi'gra•tive.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.