Lexic.us

Definition of Ã

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

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

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

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

5. Noun. The basic unit of electric current adopted under the Systeme International d'Unites. "A typical household circuit carries 15 to 50 amps"

6. Noun. The 1st letter of the Roman alphabet.

7. Noun. The blood group whose red cells carry the A antigen.

Definition of Ã

1. prep. In; on; at; by.

Medical Definition of Ã

1. 1. First letter of the Greek alphabet, alpha, used as a classifier in the nomenclature of many sciences. 2. Symbol for atto-, Bunsen's solubility coefficient, specific optical rotation, absorbance, specific absorption coefficient, degree of dissociation, adenosine or adenylic acid in polynucleotides, alanine in polypeptides, first substrate in a multisubstrate enzyme=catalyzed reaction 3. In chemistry, denotes the first in a series, a position immediately adjacent to a carboxyl group, the first of a series of closely related compounds, an aromatic substituent on an aliphatic chain, or the direction of a chemical bond away from the viewer. 4. Alpha particle, ampere, adenine, alanine, Helmholtz energy, total acidity, ante, area, asymmetric, auris, artery, arteria, absorptivity, alveolar gas, systemic arterial blood. (05 Mar 2000)

Lexicographical Neighbors of A

9/11 90 90th 91 92 93 94 95 95th 96

97 98 99 9th a A A'man a' haemolysis A-bomb A-DNA

A-esotropia A-exotropia A-E amputation a-factor a-form DNA a-good A-horizon A-H conduction time A-H interval A-K amputation

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