Webster's Revised Unabridged Dictionary · 1913

Imposing

Imposing , adjective

1.
Laying as a duty; enjoining.
2.
Adapted to impress forcibly; impressive; commanding; as, an imposing air; an imposing spectacle.
Large and imposing edifices. — Bp. Hobart
3.
Deceiving; deluding; misleading.

Imposing , noun

(Printing) The act of imposing the columns of a page, or the pages of a sheet. See Impose, transitive verb, 4.
Collocations (1)
Imposing stone (Printing) , the stone on which the pages or columns of types are imposed or made into forms; -- called also imposing table.