Antonym: acceleration. Similar words: retardant, retaliation, retard, retarded, interpretation, predation, gradation, emendation. Meaning: [‚rɪːtɑr'deɪʃn /-tɑː'd-] 
n. 1. a decrease in rate of change 2. the extent to which something is delayed or held back 3. any agent that retards or delays or hinders 4. lack of normal development of intellectual capacities 5. the act of slowing down or falling behind.
n. 1. a decrease in rate of change 2. the extent to which something is delayed or held back 3. any agent that retards or delays or hinders 4. lack of normal development of intellectual capacities 5. the act of slowing down or falling behind. 
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91. Leucaena leaves contain amount of Mimosa factors, which may cause growth retardation ruminants, weight loss and other toxic reactions and even death.
92. Asbestos reinforcement confers excellent flame retardation properties on a composite.
93. It is therefore not surprising that self - retardation is not well - documented in the systems we are considering.
94. The temperament - responsive teaching effectively improved the mathematical learning behaviors of the students with mild mental retardation.
95. mental retardation - 1 gene ( FMR 1 ) by cyclic adenosine monophosphate ( cAMP ).
96. The negative C-type retardation compensator for the liquid crystal display includes polyarylate having a thio group or a sulfur oxide group in a polymer main chain thereof.
97. The acid retardation process occurs due to the selective absorptivity of the hydronium ion on the anion exchange resin.
98. Results Most of pyromania with mental disorder were male youth. The common type of mental disorders are schizophrenia[sentencedict.com/retardation.html], mental retardation and personality disorder successively.
99. And indeed the Court this time held that executions of persons with mental retardation did violate the Eighth Amendment's proscriptions against cruel and unusual punishment.
100. It also indicates that the accuracy and reliability of time retardation for arc extinction can be increased by replacing traditional extinction relay with electron extinction circuit.
101. Objective : To explore file etiology of mental retardation, amenorrhea, abnormal childbearing history and abnormal sexual appearance.
102. Typical symptoms of mercury poisoning include mental retardation loss of balance, tremors, blindness loss of hearing.
103. Running safely of mine hoist mainly depends on running parameter control in retardation period.
104. Objective:To investigate the effect of Lipopolysaccharide(LPS)on intra-uterine fetal death(IUFD), fetal growth retardation(IUGR)and skeletal development retardation in mice.
105. However, muscle spasms, hyperreflexia, refractory epilepsy, developmental delay, and mental retardation are common in children afflicted with the disorder.
106. The results show good flame retardation and sharp improvement of residue char yields. When EPH counts for 30 percent the LOI value was improved to 27, it displays condensed phase flame retardation.
107. The retardation of the Fresnel rhomb phase retarder was measured with the measurement error less than 0.3%.
More similar words: retardant, retaliation, retard, retarded, interpretation, predation, gradation, emendation, validation, foundation, vegetation, commendation, trepidation, degradation, dilapidation, intimidation, accommodation, starvation, consolidation, recommendation, foundation stone, secretary, international relations, demilitarization, nationalization, rationalization, multinational corporation, undersecretary, secretary of state, reaction formation.