Search results
- DictionaryH/āCH/
abbreviation
- 1. hard (used in describing grades of pencil lead): "a 2H pencil"
- 2. height (in giving the dimensions of an object): "H 195 cm by W 107 cm by D 52 cm"
symbol
- 1. enthalpy.
- 2. the chemical element hydrogen.
H, or h, is the eighth letter of the Latin alphabet, used in the modern English alphabet, including the alphabets of other western European languages and others worldwide. Its name in English is aitch (pronounced / eɪ tʃ / , plural aitches ), or regionally haitch / h eɪ tʃ / .
Jan 31, 2012 · Learn how the letter H evolved from a Semitic symbol to a common letter in the English language. Find out how it was used in words like author, honest, and historical, and how it is pronounced today.
the eighth letter of the English alphabet, a consonant. any spoken sound represented by the letter H or h, as in hot or behave. something having the shape of an H . a written or printed representation of the letter H or h. a device, as a printer's type, for reproducing the letter H or h. h.
h, eighth letter of the alphabet. It corresponds to Semitic cheth and Greek eta (Η). It may derive from an early symbol for fence. In the early Greek alphabets a form with three horizontal bars and the simpler form H were both widely distributed.
- The Editors of Encyclopaedia Britannica
Hydrogen is a chemical element; it has symbol H and atomic number 1. It is the lightest element and, at standard conditions, is a gas of diatomic molecules with the formula H 2, sometimes called dihydrogen, but more commonly called hydrogen gas, molecular hydrogen or simply hydrogen.
- Colorless gas
- group 1: hydrogen and alkali metals
- 1
- period 1
1 day ago · Learn the letter H or h in English, its pronunciation, abbreviation, and usage in various fields. Find out the origin, symbols, and meanings of H or h in different contexts.
noun. h. /eɪtʃ/ [countable, uncountable] (pl. Hs, H's, h's. /ˈeɪtʃəz/ ) the 8th letter of the English alphabet “Hat” begins with (an) H/“H.” see H-bomb. Questions about grammar and vocabulary? Find the answers with Practical English Usage online, your indispensable guide to problems in English. See H in the Oxford Advanced Learner's Dictionary.
