(Britain) Abbreviation of hard in reference to a grade of pencil lead. / (linguistics) Abbreviation of high |in reference to a dialect's social status. / (philately) Abbreviation of hinged.

The ordinal number eighth, derived from this letter of the English alphabet, called aitch and written in the Latin script.

(calendar terms) Synonym of AH: in the year of the Hegira, used to mark dates employing the Islamic calendar.

Hentai.

(Internet slang, usually humorous) Delete that last character.

(text messaging) hat

Abbreviation of quarter-hard (reference to alloy strength, as in between dead soft and half hard).

(rare) Emphasises obscenities. / (dated, fandom slang, humorous) Indicates a fannish context or an association with science fiction fandom.

Alternative form of H+

transhumanism