H

H (named aitch /ˈeɪtʃ/ or also haitch /ˈheɪtʃ/ plural aitches or haitches) is the eighth letter in the ISO basic Latin alphabet.

The original Semitic letter Heth most likely represented the voiceless pharyngeal fricative (ħ). The form of the letter probably stood for a fence or posts.

The Greek eta 'Η' in Archaic Greek alphabets still represented /h/ (later on it came to represent a long vowel, /ɛː/). In this context, the letter eta is also known as heta to underline this fact. Thus, in the Old Italic alphabets, the letter heta of the Euboean alphabet was adopted with its original sound value /h/.

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