intrusion

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Related to intrusive: extrusive, Intrusive Rock

intrusion

[in·tro̅o̅′zhən]
Etymology: L, intrudere, to push or force in
an orthodontic technique of depressing a tooth back into the occlusal plane or attempting to prevent its eruption or elongation during correction of an excessive overbite. Compare extrusion (def. 3).

intrusion

an orthodontic procedure in which a tooth is made to move further into the alveolus.
References in periodicals archive ?
In depression, intrusive thoughts have been labeled ruminative thoughts (Nolen-Hoeksema, 2000).
PNG Exploration and Country Manager Pat Smith said, "This intersection is exciting as we have possibly identified the intrusive responsible for the gold mineralisation consistently found at the Nevera prospect.
Not only are some of these questions frighteningly intrusive, they are not job related.
Noting that "some combination of these factors may also justify the use of aggressive police action without causing an investigatory stop to turn into an arrest," the court held that in the absence of any of them, "the use of such aggressive and highly intrusive tactics is not warranted.
Iris and retina scanning are the most intrusive and expensive technologies, yet the most accurate.
The end result of shifting the burden of proof could well be a more intrusive IRS, a decrease in tax revenues, and a less efficient tax system.