Synonym: A, adenine, amp, ampere, angstrom, angstrom unit, antiophthalmic factor, axerophthol, deoxyadenosine monophosphate, group A, letter a, type A, vitamin A. Similar words: c., e., F., ad, ah, as, at, ha. Meaning: [eɪ;ə] 
n. 1. 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. any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes 3. one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose) 4. (biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA 5. the basic unit of electric current adopted under the Systeme International d'Unites 6. the 1st letter of the Roman alphabet 7. the blood group whose red cells carry the A antigen.
n. 1. 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. any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes 3. one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose) 4. (biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA 5. the basic unit of electric current adopted under the Systeme International d'Unites 6. the 1st letter of the Roman alphabet 7. the blood group whose red cells carry the A antigen. 
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151 A politician is a man who undertands government, and it takes a poiltician to run a government. A statesman is a politician who's been dead ten or fifeen years. 
152 In delay there lies no plenty , Then come kiss me , sweet and twenty , Youth's a stuff that will not endure .
153 The sum ofbehavior is to retain a man's own dignity, without in -truing upon the liberty ofothers.
154 For a cultivated man to be ignorant of foreign languages is a great inconveniece.
155 Fear not that thy life shall come to an end, but rather fear that it shall never have a beginning.
156 The more riches a fool hath, the greater fool he is.
157 He whose face gives no light, shall never become a star.
158 It is a wise father that knows his own child. William Shakespeare
159 Experience keeps a dear school, but fools learn in no other.
160 When I lent I had a friend; when I asked he was unkind.
161 Dogs that bark at a distance bite not at hand.
162 It is a sad house where the hen crows louder than the cock.
163 The sum of behaviour is to retain a man's own dignity, without intruding upon the liberty of others.
164 One cannot do a foolish thing once in one's life, but one must hear of it a hundred times.
165 A bad custom is like a good cake(sentencedict.com), better broken than kept.
166 A young twig is easier twisted than an old tree.
167 A lamb is as dear to a poor man as an ox to the rich.
168 It's easy to fall into a trap, but hard to get out again.
169 One penny with right is better than a thousand without right.
170 Have no doubts because of trouble nor be thou discomtited; for the water of life's fountain springeth from a gloom bed.
171 One cannot always be a hero, but one can always be a man.
172 When two friends have a common purse, one sings and the other weeps.
173 The true university of these days is a collection of books.
174 Two cats and a mouse, two wives in one house, two dogs and a bone(sentencedict.com), never agree in one.
175 Though a lie be well dressd, it is ever overcome.
176 A chain is only as strong as its weakest link.
177 In a great river great fish are found; but take heed lest you be drowned.
178 The more a man knows, the more he see his ignorance.
179 There is in liberty as in innocence and virtue a satisfaction one can only feel in their enjoyment and a pleasure which can cease only when lost.
180 A truly elegant taste is generally accompanied with excellence of heart.