Definitions, Meanings, Synonyms, Examples and Famous Quotes of a in English

a

UK weak /ə /

US weak /ə /

Article

1.

Used when referring to someone or something for the first time in a text or conversation.

"A man came out of the room"
2.

Used to indicate membership of a class of people or things.

"He is a lawyer"
3.

Used when expressing rates or ratios; in, to, or for each; per.

"Typing 60 words a minute"

Abbreviation

1.

(in travel timetables) arrives.

"Penzance a 0915"
2.

(in units of measurement) atto- (10−18).
3.

(used before a date) before.

"A1200"
4.

Ace (used in describing play in bridge and other card games).

"You cash AK of hearts"
5.

A level.
6.

Ampere(s).
7.

ångstrom(s).
8.

Attack (in designations of US aircraft types).

"An A-10"
9.

Answer.
10.

(in personal ads) Asian.
11.

Acceleration.

Prefix

1.

Not; without.

"Atheistic"
2.

To; toward.

"Aside"
3.

Variant spelling of ad- assimilated before sc, sp, and st (as in ascend, aspire, and astringent ).
4.

Of.

"Anew"
5.

Utterly.

"Abash"

Suffix

1.

Forming ancient or Latinized modern names of animals and plants.

"Primula"
2.

Forming names of oxides.

"Baryta"
3.

Forming geographical names.

"Africa"
4.

Forming ancient or Latinized modern feminine forenames.

"Lydia"
5.

Forming nouns from Italian, Portuguese, and Spanish.

"Duenna"
6.

Forming plural nouns from Greek or Latin neuter plurals corresponding to a singular in -um or -on (such as addenda, phenomena ).
7.

Forming plural nouns in names (often from modern Latin) of zoological groups.

"Insectivora"
8.

Of.

"Coupla"
9.

Have.

"Mighta"
10.

To.

"Oughta"

Noun

1.

The first letter of the alphabet.
2.

A shape like that of a capital A.

"An A-shape"
3.

The sixth note of the diatonic scale of C major.
4.

One of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)

Synonyms (1)

Deoxyadenosine monophosphate

Type of (2)

Nucleotide Base
5.

The blood group whose red cells carry the A antigen

Synonyms (2)

Group a Type a

Type of (2)

Blood group Blood type
6.

Any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes

Synonyms (3)

Antiophthalmic factor Axerophthol Vitamin a

Type of (1)

Fat-soluble vitamin

Has types (4)

Vitamin a2 Dehydroretinol Retinol Vitamin a1
7.

The basic unit of electric current adopted under the Systeme International d'Unites

"A typical household circuit carries 15 to 50 amps"

Synonyms (2)

Amp Ampere

Type of (1)

Current unit

Part of (2)

Abamp Abampere
8.

A metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation

Synonyms (2)

Angstrom Angstrom unit

Type of (1)

Metric linear unit

Part of (6)

Micromillimetre Nanometer Millimicron Nanometre Nm Micromillimeter
9.

(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA

Synonyms (1)

Adenine

Type of (1)

Purine

Categories (1)

Biochemistry

Substance of (5)

Dna Desoxyribonucleic acid Ribonucleic acid Deoxyribonucleic acid Rna
10.

The 1st letter of the Roman alphabet

Type of (3)

Letter Alphabetic character Letter of the alphabet

Member of (2)

Latin alphabet Roman alphabet

Determiner

1.

Used before a noun to refer to a single thing or person that has not been mentioned before, especially when you are not referring to a particular thing or person

"I've bought a car."