单词	deleterious
释义	deleteriousdel‧e‧ter‧i‧ous /ˌdeləˈtɪəriəs◂ $ -ˈtɪr-/ adjective formal Word Origin WORD ORIGINdeleterious Origin: 1600-1700 Medieval Latin deleterius, from Greek deleisthai ‘to hurt’ Examples EXAMPLES FROM THE CORPUS Almost always, these have a deleterious effect on the textile material, and they should be excluded. However, it is never too late to stop a damaging practice that has a deleterious impact upon the Catholic community. In contrast, ethanol and acetaldehyde did not have any apparent deleterious effect on lysosomal stability. Now, suppose that deleterious mutations reduce survival below this optimal value. Parental divorce has often been assumed to have deleterious effects on children. Therefore it appears that hypertension has an additive deleterious effect on overall prognosis in the diabetic. These are poor in nutrients and their peaty soils have little capacity to absorb any more acid without deleterious effects. Thus a possible deleterious effect of hyperinsulinaemia may be the inhibition of prostacyclin production by arterial wall. Collocations COLLOCATIONS FROM THE ENTRY► deleterious effects  the deleterious effects of smoking COLLOCATIONS FROM THE CORPUSNOUN► effect · It is not possible, of course, to be certain of the extent of their deleterious effect without a great deal more investigation.· Therefore it appears that hypertension has an additive deleterious effect on overall prognosis in the diabetic.· Parental divorce has often been assumed to have deleterious effects on children.· Almost always, these have a deleterious effect on the textile material, and they should be excluded.· These are poor in nutrients and their peaty soils have little capacity to absorb any more acid without deleterious effects.· In contrast, ethanol and acetaldehyde did not have any apparent deleterious effect on lysosomal stability.· Kinmond and colleagues' study suggests that a short delay may improve outcome without any obvious deleterious effects.· As Appendix Table A. 10 shows, in the communities studies, rising maternal age has an increasingly deleterious effect on viability. ► mutation · Now, suppose that deleterious mutations reduce survival below this optimal value.· Senescence of clones is probably caused by the accumulation of deleterious mutations.· Furthermore, the total rate of production of deleterious mutations and their pattern of age-specificity are unknown.· Suppose now that deleterious mutations are age-specific. damaging or harmful SYN  detrimental:  the deleterious effects of smoking
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