Word Study
    ageing (root: age)
WORDNET DICTIONARY
Noun ageing has 2 senses
- ageing(n = noun.process) aging, ripening - acquiring desirable qualities by being left undisturbed for some time; Array has particulars: mellowing
- ageing(n = noun.process) aging, senescence - the organic process of growing older and showing the effects of increasing age; Array has particulars: catabiosis
is a kind of biological process, organic process
is a kind of biological process, organic process
Adjective ageing has 1 sense
- ageing(s = adj.all) aging, senescent - growing old; Array
CIDE DICTIONARY
ageing, adj. 
                                            
                                         having lived for a relatively long (or a specified) time; not young; -- used especially of persons.  Opposite of young .                                                                                 [WordNet 1.5]                                                                                                                    
                                                                                    ageing, n. 
                                            
                                         same as aging.                                                                                 [WordNet 1.5]                                                                                                                    
                                                                                    OXFORD DICTIONARY
ageing, n.  (also aging)
1 growing old.
2 giving the appearance of advancing age.
3 a change of properties occurring in some metals after heat treatment or cold working.
                    1 growing old.
2 giving the appearance of advancing age.
3 a change of properties occurring in some metals after heat treatment or cold working.
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