H

is the eighth letter of the latin Alphabet. In reference, it is spelled aitch (or sometimes haich by speakers of dialects—primarily Irish and Australian—which pronounce an ''h'' in the name of the letter itself). The English name aitch /eItS/ or haitch /heItS/ derives from Old French /atS/ > Middle English /a:tS/. /heItS/ is thus a spelling pronunciation based on the sound usually associated with the English letter. The Semitic letter ח (Ħêt) probably represented the phoneme /X/ ( and Romanian borrowed the /h/ phoneme from its neighbouring Slavic languages and Castilian /x/ developed [h] allophones in some Spanish-speaking countries. In German, h is typically used as a vowel lengthener as well as the letter for the phoneme /h/. This may be because /h/ was sometimes lost between vowels in German, but it may also have to do with the fact that Romance lost /h/. Hence, h is used in many spelling systems in digraphs and trigraphs like ch in Spanish, English /tS/, French /S/ from /tS/, Italian /k/, German /x/ etc. Hotel represents the letter H in the NATO_phonetic_alphabet.

Meanings for H

In anime (Japanese animation), H is the abbreviation for "hentai"; See also Ecchi.

In chemistry, H is the symbol for hydrogen.

In international licence plate codes, H stands for Hungary.

In mathematics, blackboard_bold \mathbb{H} represents the quaternions.

In the Metric_system,

H is the symbol for the SI_derived_unit for electric inductance, the henry.

h, hecto, is the SI_prefix meaning hundred, 102.

In music, H is a note in the German system, corresponding to B natural.

In physics, h is Planck's_constant.

H is the stage name of Ian Watkins of former pop_group Steps. See also: ĥ, ħ, Eta Two-letter combinations starting with H:

ha hb hc hd he hf hg hh hi hj hk hl hm hn ho hp hq hr hs ht hu hv hw hx hy hz

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