Stellar group welcomes Alternative Technology lecture (7)
I believe the answer is:
oration
'lecture' is the definition.
(I've seen this before)
'stellar group welcomes alternative technology' is the wordplay.
I cannot quite understand how this works, but
'alternative' could be 'or' and 'or' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for oration that I've seen before include "A formal or ceremonial speech" , "An eloquent speech" , "A formal or public speech" , "Power of speech" , "lecture" .)