propylon
Concise Oxford English Dictionary © 2008 Oxford University Press:
propylon /ˈprɒpɪlɒn/
▶noun (pl. propylons or propyla /-lə/) another term for propylaeum.
– origin C19: via L. from Gk propulon, from pro ‘before’ + pulē ‘gate’.
'propylon' also found in these Oxford entries:

