πυκνόστυλος
From LSJ
ἔνδον γὰρ ἁνὴρ ἄρτι τυγχάνει, κάρα στάζων ἱδρῶτι καὶ χέρας ξιφοκτόνους → yes, the man is now inside, his face and hands that have slaughtered with the sword dripping with sweat
English (LSJ)
ον,
A with the pillars close together, i.e. at a distance of 1 1/2 diameters, opp. ἀραιόστυλος, Vitr.3.3.1.
German (Pape)
[Seite 816] mit dichten, dichtstehenden od. vielen Säulen, Vitruv. 3, 2.