A

All possible synonyms of the word A as well as its hypernyms, hyponyms, antonyms, derivations, entailments, meronyms, pertainyms, domain members, similar words, verb groups, and so on...

A, type A, group A

Definition

  • the blood group whose red cells carry the A antigen

Synonyms

  • A
  • type A
  • group A

Hypernyms

  • blood group, blood type: human blood cells (usually just the red blood cells) that have the same antigens

A, a

Definition

  • the 1st letter of the Roman alphabet

Synonyms

  • A
  • a

Hypernyms

  • letter, letter of the alphabet, alphabetic character: the conventional characters of the alphabet used to represent speech; "his grandmother taught him his letters"

Member holonyms

  • Roman alphabet, Latin alphabet: the alphabet evolved by the ancient Romans which serves for writing most of the languages of western Europe

Ampere, amp, A

Definition

  • the basic unit of electric current adopted under the Systeme International d'Unites; "a typical household circuit carries 15 to 50 amps"

Synonyms

  • ampere
  • amp
  • A

Hypernyms

  • current unit: a measure of the amount of electric charge flowing past a circuit point at a specific time

Part holonym

  • abampere, abamp: a unit of current equal to 10 amperes

Part metromyms

  • milliampere, mA: one thousandth of an ampere

Adenine, A

Definition

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

Synonyms

  • adenine
  • A

Hypernyms

  • purine: any of several bases that are derivatives of purine

Substance holonyms

  • deoxyribonucleic acid, desoxyribonucleic acid, DNA: (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information; "DNA is the king of molecules"
  • ribonucleic acid, RNA: (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"

Topic domains

  • biochemistry: the organic chemistry of compounds and processes occurring in organisms; the effort to understand biology within the context of chemistry

Deoxyadenosine monophosphate, A

Definition

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

Synonyms

  • deoxyadenosine monophosphate
  • A

Hypernyms

  • nucleotide, base: a phosphoric ester of a nucleoside; the basic structural unit of nucleic acids (DNA or RNA)

Vitamin A, antiophthalmic factor, axerophthol, A

Definition

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

Synonyms

  • vitamin A
  • antiophthalmic factor
  • axerophthol
  • A

Hypernyms

  • fat-soluble vitamin: any vitamin that is soluble in fats

Hyponyms

  • vitamin A1, retinol: an unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotene
  • vitamin A2, dehydroretinol: a viscous alcohol that is less active in mammals than is vitamin A1

Angstrom, angstrom unit, A

Definition

  • 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

  • angstrom
  • angstrom unit
  • A

Hypernyms

  • metric linear unit: a linear unit of distance in metric terms

Part holonym

  • nanometer, nanometre, nm, millimicron, micromillimeter, micromillimetre: a metric unit of length equal to one billionth of a meter

Part metromyms

  • picometer, picometre, micromicron: a metric unit of length equal to one trillionth of a meter

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