Sentence:  Hypnosis is a peculiar <WSD>condition</WSD> of the nervous system.   Steps were taken to ameliorate the <WSD>condition</WSD> of slavery.   Security is defined as the <WSD>condition</WSD> of not being threatened.   Aging is a <WSD>condition</WSD> over which we are powerless. 
Meaning of the word marked with <WSD> tags:  A particular state of being.