A
zelfstandig naamwoord
1 A
A metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation.
synoniemen: angstrom, angstrom unit.
Nederlands: ångström
Pools: Å, angstrem
2 A
Any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes.
synoniemen: antiophthalmic factor, axerophthol, vitamin A.
Nederlands: vitamine A
Pools: witamina A
3 A
One of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose).
synoniem: deoxyadenosine monophosphate.
4 A
biochemistry Purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA.
synoniem: adenine.
Pools: adenina
5 A
The basic unit of electric current adopted under the Systeme International d'Unites:
— A typical household circuit carries 15 to 50 amps.
Pools: A, amper
6 A
The 1st letter of the Roman alphabet.
7 A
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