h

H, 8th letter of the alphabet. It is a usual symbol for a glottal spirant, murmured (as in the English house) or voiceless (as in the English herb). In some Greek alphabets eta, the long e, had this form. In chemistry H is the symbol for the element hydrogen.

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h

(Hexadecimal) A symbol that refers to a hex number. For example, 09h has a numeric value of 9, whereas 0Ah has a value of 10. See hex chart. See also henry.

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h

(quantum mechanics)

Planck's constant

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H

(electromagnetism)

henry

(chemistry)

hydrogen

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H

On drawings, abbr. for “hard.”

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h

Symbol for “hour.”

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1.		h - A simple markup language intended for quick conversion of existing text to hypertext.
2.		h - A method of marking common words to call attention to the fact that they are being used in a nonstandard, ironic, or humorous way. Originated in the fannish catchphrase "Bheer is the One True Ghod!" from decades ago. H-infix marking of "Ghod" and other words spread into the 1960s counterculture via underground comix, and into early hackerdom either from the counterculture or from SF fandom (the three overlapped heavily at the time). More recently, the h infix has become an expected feature of benchmark names (Dhrystone, Rhealstone, etc.); this follows on from the original Whetstone (the name of a laboratory) but may have been influenced by the fannish/counterculture h infix.