Inert gas seen at a lake a short while after creation (8)
I believe the answer is:
neonatal
'a short while after creation' is the definition.
I can't judge whether this definition defines the answer.
'inert gas seen at a lake' is the wordplay.
'inert gas' becomes 'neon' (I've seen this before).
'seen' means one lot of letters go next to another.
'lake' becomes 'l' (geographical abbreviation).
'neon'+'at'+'a'+'l'='NEONATAL'
Can you help me to learn more?
(Other definitions for neonatal that I've seen before include "at a very young age" , "Relating to an infant during its first month" , "Relating to new baby" , "Relating to the newborn" , "Describing newly-born" .)