Meaning: [eɪtʃ] 
n. 1. a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe 2. a unit of inductance in which an induced electromotive force of one volt is produced when the current is varied at the rate of one ampere per second 3. the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second 4. the 8th letter of the Roman alphabet 5. (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure.
n. 1. a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe 2. a unit of inductance in which an induced electromotive force of one volt is produced when the current is varied at the rate of one ampere per second 3. the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second 4. the 8th letter of the Roman alphabet 5. (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure. 
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151, H antigen was expressed to a varying degree in all biopsy specimens but was weaker in the distal colon.
152, For this reason we can see a little way beyond the horizon H even on the Earth.
153, The quotient simply becomes arbitrarily large as h goes to 0.
154, The H conversion code provides a facility for printing out characters.
155, To clarify some grammatical doubts, the young wrote to H. Fowler, the lexicographer who produced the "Concise English Dictionary".
156, The latter arises from abstraction of the somewhat lesser activated C - H bond in the dioxolane.
157, H & T staff are benevolent,(http://sentencedict.com/h.html) innovative with pioneering spirit and lofty pursuits.
158, The English naturalist W. H. Hudson was born in Argentina.
159, These cognitive deficits are generally considered part of the definition of A . D . H . D.
160, Trim numbers with H have cobalt alloy hard faced seat ring facing.
161, Glyoxylic acid was rapidly synthesized by catalytic oxidation of glyoxal with H 2 O 2.
162, A chemical constituent of cannabis, C 21 H 28 ( OH ) 2.
163, H 2 O absorption is predominant in the troposphere, particularly the lower troposphere.
164, He was delighted to coax the monoplane to 330 m.p.h.
165, The latest F - 16 s are now up to a Block 50 H miniblock designation.