prostas

[ proh-stas ]
/ ˈproʊ stæs /

noun, plural pro·sta·des [proh-stey-deez] /proʊˈsteɪ diz/.

(in classical architecture) an antechamber or vestibule.
(in a classical temple) the area included between parastades.

Origin of prostas

< Greek prostás literally, that which stands before (cf. prostasis)