spiritus asper

From Latin spīritus asper; literally, 'rough breath'

spiritus asper (plural spiritus aspers)

1. (orthography) A diacritic mark in Ancient Greek used to indicate aspiration of an initial vowel or rho.

   The spiritus asper mark looks like an opening single quote, as in the word εὑρίσκω (heurískõ), the word εὕρηκα (heúrēka), or the word ἕξις (héxis, "habit").

• rough breathing
• dasia, dasy pneuma

• spiritus lenis

From spīritus (“breath, breathing”) + asper (“rough, harsh”)

• (Classical) IPA^(key): /ˈspiː.ri.tus ˈas.per/, [ˈspiː.rɪ.tʊs ˈas.pɛr]

spīritus asper m (genitive spīritūs asperī); fourth declension

1. spiritus asper

Fourth declension.
Second declension.