estratus

== Catalan == === Etymology === Learned borrowing from Latin strātus (“layer”). === Pronunciation === IPA(key): (Northern, Balearic, Central) [əsˈtɾa.tus] IPA(key): (Valencia, Northwestern) [esˈtɾa.tus] === Noun === estratus m (invariable) (meteorology) stratus Synonym: estrat === Further reading === “estratus”, in Diccionari de la llengua catalana [Dictionary of the Catalan Language] (in Catalan), second edition, Institute of Catalan Studies [Catalan: Institut d'Estudis Catalans], April 2007