Having the property of dilating or expanding (transitive and intransitive) = dilatative, adj.

Of the nature of or tending to dilatation.

Of or pertaining to expansion; of the nature of or tending to or capable of producing expansion.

Of or pertaining to expansion. Of an engine, process, etc.: Involving or depending upon the principle of expansion.

of or pertaining to a dilatation.

Of or pertaining to expansion.

Of, tending to, or directed towards expansion.