zwitterion

zwit·ter·i·on

Z0030000 (zwĭt′ər-ī′ən, swĭt′-, tsvĭt′-)n. A molecule, especially an amino acid, containing a positively charged ion at one end and a negatively charged ion at the other.

[German : Zwitter, hybrid (from Middle High German zwitarn, from Old High German, from zwi-, twice; see dwo- in Indo-European roots) + Ion, ion (from Greek; see ion).]

zwit′ter·i·on′ic (-ī-ŏn′ĭk) adj.

zwitterion

(ˈtsvɪtərˌaɪən) n (Chemistry) chem an ion that carries both a positive and a negative charge[C20: from German Zwitter hermaphrodite + ion] zwitterionic adj

zwit•ter•i•on

(ˈzwɪt ərˌaɪ ən, ˈswɪt-, ˈtsvɪt-)

n. an ion with both a positive and a negative charge. [< German Zwitterion (1897) =Zwitter hybrid, hermaphrodite + Ion ion]

Translations

zwitterion

enUK

ion

[i´on] an atom or group of atoms having a positive (cation) or negative (anion) electric charge by virtue of having gained or lost an electron; substances forming ions are called electrolytes. adj., adj ion´ic.dipolar ion an ion that has both positive and negative regions of charge.hydrogen ion the positively charged hydrogen" >hydrogen atom (H⁺), which is the positive ion of all acids" >acids. See also hydrogen ion concentration.hydroxyl ion the negatively charged group, OH⁻, present to excess in alkaline solutions.

Fig. 318 Zwitterion . Molecular structure of (a) undissociated amino acid, (b) Zwitterion.

zwitterion

the chemical form of an AMINO ACID with a dipolar ion state. The pH at which the amino acid exists as a zwitterion is called its ISOELECTRIC POINT and at this pH it will not migrate in an electric field, produced, for example, by ELECTROPHORESIS.

单词	zwitterion
释义	zwitterion enUK zwit·ter·i·on Z0030000 (zwĭt′ər-ī′ən, swĭt′-, tsvĭt′-)n. A molecule, especially an amino acid, containing a positively charged ion at one end and a negatively charged ion at the other. [German : Zwitter, hybrid (from Middle High German zwitarn, from Old High German, from zwi-, twice; see dwo- in Indo-European roots) + Ion, ion (from Greek; see ion).] zwit′ter·i·on′ic (-ī-ŏn′ĭk) adj. zwitterion (ˈtsvɪtərˌaɪən) n (Chemistry) chem an ion that carries both a positive and a negative charge[C20: from German Zwitter hermaphrodite + ion] zwitterionic adj zwit•ter•i•on (ˈzwɪt ərˌaɪ ən, ˈswɪt-, ˈtsvɪt-) n. an ion with both a positive and a negative charge. [< German Zwitterion (1897) =Zwitter hybrid, hermaphrodite + Ion ion] Translations zwitterion enUK zwitterion [′tsfid·ər‚ī‚än] (chemistry) dipolar ion zwitterion enUK ion [i´on] an atom or group of atoms having a positive (cation) or negative (anion) electric charge by virtue of having gained or lost an electron; substances forming ions are called electrolytes. adj., adj ion´ic.dipolar ion an ion that has both positive and negative regions of charge.hydrogen ion the positively charged hydrogen" >hydrogen atom (H⁺), which is the positive ion of all acids" >acids. See also hydrogen ion concentration.hydroxyl ion the negatively charged group, OH⁻, present to excess in alkaline solutions. Fig. 318 Zwitterion . Molecular structure of (a) undissociated amino acid, (b) Zwitterion. zwitterion the chemical form of an AMINO ACID with a dipolar ion state. The pH at which the amino acid exists as a zwitterion is called its ISOELECTRIC POINT and at this pH it will not migrate in an electric field, produced, for example, by ELECTROPHORESIS. ThesaurusSeeion
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