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A-
| Babylon English English dictionary |  Download this dictionary |
a-
pref.
on, in, expresses a state or condition (such as: afoot, on foot, asleep, abed); not, non, without (such as: asexual)
| Wikipedia English The Free Encyclopedia | Download this dictionary |
A-
A- may refer to:
- A- (plane), a U.S. military aircraft prefix
- A- blood, blood type A negative.
- A- (grade), a letter grade in the four point grade system, above 'B+', but below an 'A'
- Privative a, a prefix expressing negation
- A
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Blood type
A blood type (also called a blood group) is a classification of blood based on the presence or absence of inherited antigenic substances on the surface of red blood cells (RBCs). These antigens may be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the blood group system. Some of these antigens are also present on the surface of other types of cells of various tissues. Several of these red blood cell surface antigens can stem from one allele (or very closely linked genes) and collectively form a blood group system. Blood types are inherited and represent contributions from both parents. A total of 30 human blood group systems are now recognized by the International Society of Blood Transfusion (ISBT).
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a-
předp.
ne-
| Webster's Revised Unabridged Dictionary (1913) | Download this dictionary |
A-
A, as a prefix to English words, is derived from various sources. (1) It frequently signifies on or in (from an, a forms of AS. on), denoting a state, as in afoot, on foot, abed, amiss, asleep, aground, aloft, away (AS. onweg), and analogically, ablaze, atremble, etc. (2) AS. of off, from, as in adown (AS. ofd/ne off the dun or hill). (3) AS. a- (Goth. us-, ur-, Ger. er-), usually giving an intensive force, and sometimes the sense of away, on, back, as in arise, abide, ago. (4) Old English y- or i- (corrupted from the AS. inseparable particle ge-, cognate with OHG. ga-, gi-, Goth. ga-), which, as a prefix, made no essential addition to the meaning, as in aware. (5) French a (L. ad to), as in abase, achieve. (6) L. a, ab, abs, from, as in avert. (7) Greek insep. prefix / without, or privative, not, as in abyss, atheist; akin to E. un-.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
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a-
لا, بلا (سابقة
| A- in French | A- in Spanish | A- in Russian | A- in Arabic | A- in Thai | A- in Czech | A- in Danish | A- in Norwegian | A- in Romanian | A- in Farsi
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