trud-, -trude, trus-, -trusion +

An obsolete term meaning to thrust, to push forcefully, or to pull away: "Using the oars, Adam abstruded his boat away from the dock and rowed out onto the lake."

1. Concealed or hidden; complex, obscure, and difficult to understand: "The poetry of Harry Philiips was often described as abstruse and, unfortunately, it was often relegated to the bottom shelf in the library."
2. Difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge: "Some scientists may understand Einstein's theory of relativity; however, for most nonscientists, it continues to be an abstruse collection of surrealistic or unrealistic ideas."
4. Etymology: from Latin abstrusus, past participle of abstrudere, "conceal"; literally, "to thrust away", from ab-, "away" + trudere "to thrust, to push".

1. In a manner difficult to understand: "Bruce's essay was abstrusely difficult to understand except by experts."
2. A concealed way of doing something: "Sally abstrusely designed secret pockets in the jacket she was making."
3. Difficult to be comprehended or understood; opposed to what is obvious: "Jeremy's theory seems to be that the more abstrusely he writes the more famous he will become."

1. The quality of being unclear and hard to understand; obscureness: "The abstruseness of the economist when he was speaking at the forum about the economic situation was confusing his audience."
2. Wisdom that is recondite (little known; obscure), difficult to comprehend, and profound; "The university students were confused by the professor's abstruseness in his lectures."

1. The quality or state of being abstruse.
2. An abstruse statement, action, etc.

In geology, a process wherein the residual liquid of a differentiating magma is drawn into rifts formed in the crystal mesh at a late stage by deformation of unspecified origin.

1. To thrust down or out.
2. To push down with force.

The act of thrusting or driving down or outward; outward thrust.

1. To form or to shape by forcing through an opening.
2. To force or to squeeze something out.
3. To thrust out; to force or to press out; to expel: "The volcanic action extruded molten rock."
4. To make something by forcing a semisoft material; such as, plastic or molten metal, through a specially shaped mold or nozzle.

1. Squeezing out by applying pressure: "There was an unexpected extrusion of toothpaste from the bottom of the tube."
2. Something that bulges out, is protuberant, or projects from a form.
3. Something formed by forcing semisoft material through a specially shaped mold or nozzle.
4. An igneous rock formed by the emission of molten material or magma through cracks in the earth's surface where it forms a lava flow and solidified igneous rock.
5. An object or material produced by extruding.

1. Tending to push or thrust out.
2. Tending to protrude or project.
3. Derived from magma poured out or ejected at the earth's surface; a reference to igneous rocks.
4. Noting or pertaining to a class of igneous rocks that have been forced out in a molten or plastic condition upon the surface of the earth.

1. Not conspicuous, blatant, or assertive.
2. Not noticeable; unobtrusive.

1. To put or force in inappropriately; especially, without invitation, fitness, or permission.
2. To disturb someone's peace or privacy by going or being somewhere uninvited.
3. To be an unwelcome presence in, or to make an unwelcome entry into, something or a place: "The noise of the screaming of the amusement-park riders intruded on the quiet afternoon."
4. To force molten rock into a preexisting rock formation.
5. To install (a cleric) in a church contrary to the wishes of its members.

A female intruder.

1. A disturbance of someone's peace or privacy by an unwelcome arrival or presence.
2. The action of thrusting in, or of entering into a place or state without an invitation, a right, or welcome: "The birthday party was disturbed by the intrusion of an unwelcome guest."
3. An unwelcome presence or effect that disturbs or upsets something.
4. An illegal entry into a place, often by force, in order to commit a crime.
5. A body of igneous rock that has moved while molten into older solid rocks with subsequent alteration of those rocks.
6. The movement of molten rock magma into preexisting rock.