(fandom slang) The ship of characters Harry Potter and Hermione Granger of the Harry Potter series.

(medicine) Initialism of hemoglobin and hematocrit. (as a combined blood test)

English rendering of a common Hebrew posthumous honorific.

(text messaging) hat

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

(baseball) Abbreviation of hits. / (slang) Abbreviation of heroin. / (journalism) Abbreviation of half-year.

(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.

(sciences) Abbreviation of hour (particularly when used as a (non-SI) unit of time alongside International System of Units (SI) units)

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

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