isopiptesis

Meaning

Noun

• An isoline that joins points on a map where the individuals of a particular migratory species arrive at the same time each year.

Origin

• Refashioning of the earlier spelling isepiptesis, from German Isepiptesen used by Alexander von Middendorff in his 1855 work Die Isepiptesen Russlands, from + Ancient Greek ἐπίπτησις ("flying down upon"), from ἐπι- + πτῆσῐς, from πέτομαι.