Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
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No pronunciation record was provided for this word.
noun
An isoline that joins points on a map where the individuals of a particular migratory species arrive at the same time each year.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
Refashioning of the earlier spelling isepiptesis, from German Isepiptesen used by Alexander von Middendorff in his 1855 work Die Isepiptesen Russlands, from iso- + Ancient Greek ἐπίπτησις (epíptēsis, “flying down upon”), from ἐπι- (epi-, “upon”) + πτῆσῐς (ptêsĭs, “flight”), from πέτομαι (pétomai, “fly”).
