chelidonias
Could not find chelidonian in Logeion dictionaries.
chelidonian Noun: masculine accusative singular of chelidonias
chĕlīdŏnĭas, ae, m., = χελιδονίας (pertaining to the swallow),
- the west wind, blowing after the 22d of Feb. (after the arrival of the swallows), Plin. 2, 47, 47, § 122.
chelīdoniās, ae, Akk. ān, m. (χελιδονίας), der nach dem 22. Februar (nach Ankunft der Schwalben) wehende Westwind, Plin. 2, 122.
chĕlīdŏnĭās, æ, m. (χελιδονίας), vent dʼouest qui souffle au printemps : Plin. 2, 122.