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Apt to intrude; characterized by intrusion; entering without right or welcome. Intrusive rocks (Geol.), rocks which have been forced, while in a plastic or melted state, into the cavities or between the cracks or layers of other rocks. The term is sometimes used as equivalent to plutonic rocks. It is then contrasted wi…

fusive wave." Pope. Effusive rocks (Geol.), volcanic rocks, in distinction from so-called intrusive, or plutonic, rocks. -- Ef*fu"sive*ly, adv. -- Ef*fu"sive*ness, n.

Forced out at the surface; as, extrusive rocks; -- contrasted with intrusive.

To frequent; to resort to frequently; to visit pertinaciously or intrusively; to intrude upon. You wrong me, sir, thus still to haunt my house. Shak. Those cares that haunt the court and town. Swift.

Same as Intrusive.

Given to meddling; apt to interpose in the affairs of others; officiously intrusive. -- Med"dle*some*ness, n.

thrust one's self or one's opinions upon others, or to enter uninvited; forward; pushing; intrusive. -- Ob*tru"sive*ly, adv. -- Ob*tru"sive*ness, n. Not obvious, not obtrusive, but retired. Milton.

supposed to have consolidated from a melted state at a great depth from the surface. Cf. Intrusive rocks, under Intrusive. -- Plutonic theory. (Geol.) See Plutonism.

Pressing forward in business; enterprising; driving; energetic; also, forward; officious, intrusive. -- Push"ing*ly, adv.

In a scambling manner; with turbulence and noise; with bold intrusiveness.