| 释义 |
atactic
a·tac·tic A5514050 (ā′tăk-tĭk)adj. Of or relating to a polymer lacking structural regularity.
[a- + Greek taktikos, of order; see tactics.]atactic (eɪˈtæktɪk) adj1. (Chemistry) chem (of a polymer) having random sequence of the stereochemical arrangement of groups on carbon atoms in the chain; not stereospecific2. (Pathology) pathol relating to or displaying ataxiaThesaurus| Adj. | 1. | atactic - lacking motor coordination; marked or caused by ataxiaataxic |
Translationsatactic
atactic[ā′tak·tik] (organic chemistry) Of the configuration for a polymer, having the opposite steric configurations for the carbon atoms of the polymer chain occur in equal frequency and more or less at random. atactic
atactic [ah-tak´tik] pertaining to or characterized by ataxia; marked by incoordination or irregularity.ataxia (a-tak'se-a, a?) [Gr. ataxia, lack of order] Defective muscular coordination, esp. that manifested when voluntary muscular movements are attempted. atacticataxic (a-tak'tik, a?) (a-tak'sik, a?), adjectivealcoholic ataxiaIn chronic alcoholism, ataxia due to a loss of proprioception.bulbar ataxiaAtaxia due to a lesion in the medulla oblongata or pons.cerebellar ataxiaAtaxia due to cerebellar disease. choreic ataxiaAtaxia in patients with chorea.Friedreich ataxia See: Friedreich, Nikolaushysterical ataxiaAtaxia of leg muscles due to somatoform disorders. limb ataxiaInability to make smooth, coordinated movements of an arm or a leg, as when trying to touch an examiner's finger with an index finger or when trying to run one's right or left heel straight down the opposite shin. Limb ataxia is present when a limb that has no deficits in strength wobbles during movement or misses its target. locomotor ataxiaTabes dorsalis.Marie ataxia See: Marie, Pierre Mariemotor ataxiaInability to perform coordinated muscle movements. optic ataxiaLoss of hand-eye coordination in reaching for an object one has seen, due to damage to visually dedicated regions of the cerebral cortex.sensory ataxiaAtaxia due to interference in conduction of sensory responses, esp. proprioceptive impulses from muscles. The condition becomes aggravated when the eyes are closed. See: Romberg sign; spinal ataxiaspinal ataxiaAtaxia due to spinal cord disease. static ataxiaLoss of deep sensibility, causing inability to preserve equilibrium in standing.atactic
Related to atactic: syndiotactic polymerSynonyms for atacticadj lacking motor coordinationSynonyms |