imago
Concise Oxford English Dictionary © 2008 Oxford University Press:
imago /ɪˈmeɪgəʊ/
▶noun (pl. imagos or imagines /ɪˈmeɪdʒɪniːz/)
- 1 Entomology the final and fully developed adult stage of an insect.
- 2 Psychoanalysis an unconscious idealized mental image of someone, which influences a person's behaviour.
– origin C18: mod. L. use of L. imago ‘image’.
'imago' also found in these Oxford entries:

