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).
Exact synonyms: Deoxyadenosine Monophosphate
Generic synonyms: Base, Nucleotide

4. Noun. (biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA.
Exact synonyms: Adenine
Category relationships: Biochemistry
Generic synonyms: Purine
Substance meronyms: Deoxyribonucleic Acid, Desoxyribonucleic Acid, Dna, Ribonucleic Acid, 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"
Exact synonyms: Amp, Ampere
Generic synonyms: Current Unit
Terms within: Ma, Milliampere
Group relationships: Abamp, Abampere

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

7. Noun. The blood group whose red cells carry the A antigen.
Exact synonyms: Group A, Type A
Generic synonyms: Blood Group, Blood Type

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

Other Resources:

Search for A on Dictionary.com!Search for A on Thesaurus.com!Search for A on Google!Search for A on Wikipedia!