◌̔

From a small version of the letter heta (Ͱ) written over the letter as a diacritical mark.

◌̔

1. A diacritical mark of the Greek script, called δασεῖα (daseîa, “rough”) in Ancient Greek, and found on ἁ (ἁ)/ἑ (ἑ), ἡ (ἡ)/ἱ (ἱ), ὁ (ὁ)/ῥ (ῥ) and ὑ (ὑ)/ὡ (ὡ). It is also known by its Latin name spīritus asper or the English name rough breathing. It was originally used to indicate the presence of the sound /h/ before a vowel or /r/ but continued to be used even after /h/ had disappeared from the language.

• (Greek-script letters) Α α, Β β, Γ γ, Δ δ, Ε ε, Ζ ζ, Η η, Θ θ, Ι ι, Κ κ, Λ λ, Μ μ, Ν ν, Ξ ξ, Ο ο, Π π, Ρ ρ, Σ σ ς, Τ τ, Υ υ, Φ φ, Χ χ, Ψ ψ, Ω ω
• (non-Classical letters) Ϝ ϝ, Ͷ ͷ, Ͱ ͱ, Ϻ ϻ, Ϙ ϙ, Ͳ ͳ
• (punctuation) · ;
• (diacritics) ᾿ ῾ ◌́ ◌̀ ῀ ¨
• δασεία