formaceus

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

formācĕus, a, um, adj. [forma],

made in a form or mould : parietes, quos appellant formaceos, quoniam in forma circumdatis duabus utrimque tabulis inferciuntur verius quam instruuntur, Plin. 35, 14, 48, § 169.