H 1
(also h )
■ noun ( plural Hs or H's )
1》 the eighth letter of the alphabet.
2》 denoting the next after G in a set of items, categories, etc.
3》 ( H ) Music (in the German system) the note B natural.
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H 2
■ abbreviation
1》 (of a pencil lead) hard.
2》 height.
3》 Physics henry(s).
4》 informal heroin.
5》 Hungary (international vehicle registration).
6》 Brit. (on street signs) hydrant.
■ symbol
1》 Chemistry enthalpy.
2》 the chemical element hydrogen.
3》 Physics magnetic field strength.
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H
Music (in the German system) the note B natural.
→ H