What does "intermigration" mean?

reciprocal migration; interchange of dwelling place by migration

What is a synonym for "intermigration"?

Common synonyms include: flight, migration, passage, run, swarm, swarming.

noun

noun ·Rare ·Advanced level

Noun

1
reciprocal migration; interchange of dwelling place by migration countable, uncountable
"point of Access and mutual Intercourſe and possibility of Intermigrations"

"point of Access and mutual Intercourſe and possibility of Intermigrations"

From inter- + migration.