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You usually use a and an when it is not clear or important which specific thing or person you are referring to. You only use a and an with singular countable nouns. When you are talking about a specific person or thing, you usually use the. You can describe someone or something using a or an with an adjective and a noun, or with a noun followed by more information. Be Careful! Don't omit a or an in front of a noun when what is key meaning in hindi noun refers to someone's profession or job.
For example, you say 'He is an architect'. Don't say ' He is architect '. You use a in front of words beginning with consonant sounds and an in front of words beginning with vowel sounds. You use an in front of words beginning with 'h' when the 'h' is not pronounced. For example, you say ' an honest man'. Don't say ' a honest man '. For example, you say ' a unique occasion'. Don't say ' an unique occasion '. You use an in front of an abbreviation when the letters are pronounced separately and the first letter begins with a vowel sound.
A and an are used to mean 'one' in front of some numbers and units of measurement. The first letter of the modern English alphabet. A The best or highest in quality or rank: grade A milk. Music a. What is the meaning of the word dominant allele sixth tone in the scale of C major or the first tone in the relative minor scale.
A One of the four major blood groups in the ABO system. Individuals with this blood group have the A antigen on the surface of their red blood cells, and the anti-B antibody in their blood serum. Used before nouns and noun phrases that denote a single but unspecified person or thing: a region; a person. Used before terms that denote number, amount, quantity, or degree: only a few of the voters; a bit more rest; a little excited. Used before a proper name to denote a type or a member of a class: the wisdom of a Socrates.
Used before a mass noun to indicate a single type or example: a dry wine. Usage Note: In writing, the form a is used before a word beginning with a consonant sound, regardless of its spelling a frog, a university, a euphemism. The form an is used before a word beginning with a vowel sound an orange, an hour. This usage made sense in that people often did not pronounce the initial h in words such as historical and heroic, but by the late 19th century educated speakers usually gave their initial h 's a huff, and the practice of writing an before such words began to die out.
Nowadays it survives primarily before the word historical. One may also come across it in the phrases an hysterectomy or an hereditary trait. These usages are acceptable in formal writing. In every; to each; per: once a month; one dollar a pound. Informal Have: He'd a come if he could. All rights reserved. Linguistics the first letter and first vowel of the modern English alphabet. Education Also called: alpha the first in a series, esp the highest grade or mark, as in an examination.
Classical Music music a. Biochemistry a human blood type of the ABO group, containing the A antigen. Film formerly, in Britain a. General Physics in combination atomic: an A-bomb ; an A-plant. Logic logic a universal affirmative categorical proposition, such as all men are mortal: often symbolized as SaP. See also occupation groupings. I spoke to a doctor. Johnson called. Words that start with vowel letters but are pronounced with the consonant sound y or w are preceded by a : a union; a European; a one-room apartment.
The names of the consonant letters f, h, l, m, n, r, s, and x begin with a vowel sound and thus are preceded by an : an F in geometry; to fly an SST. The names of all other consonants and of the vowel u take a : a B in Spanish; a U-turn. Words that begin with the letter h sometimes cause confusion. When the h is not pronounced, the word is preceded by an : an hour. When h is pronounced, the word is preceded by a : a history of the Sioux; a hero sandwich. Formerly, an was used before pronounced h: an hundred.
Usage is divided, however, with such words as historian, historical, heroic, and habitualwhich begin with an unstressed syllable in which h may be weak or silent. The use of a is widespread in what is key meaning in hindi speech and writing a historian of ancient China; a habitual criminalbut an is also common. Hotel and unique are occasionally preceded by anbut this use is regarded as old-fashioned.
Middle English a, preconsonantal variant of on see a - 1 ; confused with a 1 ]. By analogy with original nominal collocations, a - 1 has been joined to verbs, the resulting formation having the force of a present participle ablaze; astride; awash. Copyright, by Random House, Inc. She decided to buy a car. Then I saw a tall woman standing by the window. A member of the highest grouping into which society is divided by occupation, typically a senior manager, administrator, or professional.
Switch to new thesaurus. Latin alphabetRoman alphabet - the alphabet evolved by the ancient Romans which serves for writing most of the languages of western Europe. Based on WordNet 3. There is a boy in the garden. An owl can see in the dark. Mentioned in? Dictionary browser? Full browser? A - a metric unit of length equal to one ten billionth of a meter or 0.
A - any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes antiophthalmic factoraxerophtholvitamin A fat-soluble vitamin - any vitamin that is soluble in fats retinolvitamin A1 - an unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotene dehydroretinolvitamin A2 - a viscous alcohol that is less active in mammals than what is key meaning in hindi vitamin A1.
A - one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar ribose deoxyadenosine monophosphate nucleotidebase - a phosphoric ester of a nucleoside; the basic structural unit of nucleic acids DNA or RNA. A - biochemistry purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA adenine biochemistry - the organic chemistry of compounds and processes occurring in organisms; the effort to understand biology within the context of chemistry purine - any of several bases that are derivatives of can you die from unrequited love deoxyribonucleic aciddesoxyribonucleic acidDNA - biochemistry a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped what is key meaning in hindi a double helix; associated with the transmission of genetic information; "DNA is the king of molecules" ribonucleic acidRNA - biochemistry a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes; it transmits genetic information from DNA to the cytoplasm and controls certain chemical processes in the cell; "ribonucleic acid is the genetic material of some viruses".
A - the basic unit of electric current adopted under the Systeme International d'Unites; "a typical household circuit carries 15 to 50 amps" what is key meaning in hindiampere current unit - a measure of the amount of electric charge flowing past a circuit point at a specific time milliamperemA - one thousandth of an what is a food chain short answer abampabampere - a unit of current equal to 10 amperes.
A - the blood group whose red cells carry the A antigen group Atype A blood groupblood type - human blood cells usually just the red blood cells that have the same antigens.
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