prostyle
Concise Oxford English Dictionary © 2008 Oxford University Press:
prostyle /ˈprəʊstʌɪl/
▶noun Architecture a portico with a maximum of four columns.
– origin C17: from L. prostylos ‘(building) having pillars in front’, from Gk pro ‘before’ + stulos ‘column’.
'prostyle' also found in these Oxford entries:

