老人失智症 lǎorénshīzhìzhèng senile dementia Definitions Defs Origin Strokes Stroke Words Sentences Sents 老人 lǎorén noun old person an elderly person; an old man or woman; the aged失智症 shīzhìzhèng dementia Taiwan term for a brain disorder involving the loss of cognitive abilities such as memory and judgment, specifically when consciousness remains unaffected; includes conditions such as 阿兹海默症 āzīhǎimòzhèng and 帕金森氏症 pàjīnsēnshìzhèng