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Ancient Greek breathing marks — Classical languages, 11–13 years

Ancient Greek words beginning with a vowel or rho may carry a breathing mark. It tells the reader whether the word starts plainly or with an h-like puff of air.

Smooth and rough

A smooth breathing mark means no extra sound at the start: ὄνομα begins “onoma”. A rough breathing mark adds an h-like sound: ὅρος begins “horos”. The mark sits over the first vowel, or over the second vowel when two vowels form one beginning sound.

Why mark a breath?

Ancient Greek had a real difference between a plain vowel and one beginning with h. Later Greek pronunciation changed, but readers still needed a way to recover the older sound from writing. The marks were added by scholars in the Hellenistic period and became part of the written system.

Reading ὅρος and ὄρος

Look first at the mark over the first ο. In ὅρος it curves like a small opening facing right: that is rough breathing, so begin “hor-”. In ὄρος the mark is smooth, so begin “or-”. The two spellings can represent different words, so the tiny mark matters.

Do not read it as an accent

A learner may ignore the breathing mark because it looks like a tiny accent. That is reasonable: Greek writing often places several marks together above one vowel. But an accent tells you about pitch or stress, while a breathing mark tells you how the word begins; they answer different questions.

Reading Greek evidence

Breathing marks matter when reading edited Greek texts, inscriptions copied into books, and words quoted in science or philosophy. They help you pronounce a reconstructed form and distinguish similar spellings. They do not appear in every ancient inscription, so an editor may add them later.

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