Sort of parliamentary form from America mislaid in British Library (9)
I believe the answer is:
bicameral
'sort of parliamentary form from' is the definition.
I can't judge whether this defines the answer.
'america mislaid in british library' is the wordplay.
'mislaid' indicates an anagram.
'in' indicates putting letters inside.
'british library' becomes 'BL' (abbreviation for British Library).
'america' with letters rearranged gives 'icamera'.
'icamera' inserted into 'bl' is 'BICAMERAL'.
Can you help me to learn more?
(Other definitions for bicameral that I've seen before include "Like our parliament" , "using two houses" .)