Definition of Intrusive

1. Adjective. Tending to intrude (especially upon privacy). "She felt her presence there was intrusive"


2. Adjective. Of rock material; forced while molten into cracks between layers of other rock.
Category relationships: Geology
Similar to: Irruptive, Plutonic
Antonyms: Extrusive

3. Adjective. Thrusting inward. "An intrusive arm of the sea"
Also: Concave
Similar to: Intruding
Antonyms: Protrusive

Definition of Intrusive

1. a. Apt to intrude; characterized by intrusion; entering without right or welcome.

Definition of Intrusive

1. Adjective. Tending or apt to intrude; doing that which is not welcome; interrupting or disturbing; entering without right or welcome. ¹

2. Adjective. (geology) Of rocks: forced, while in a plastic or molten state, into the cavities or between the cracks or layers of other rocks. ¹

3. Noun. (geology) An igneous rock that is forced, while molten, into cracks or between other layers of rock ¹

¹ Source: wiktionary.com

Definition of Intrusive

1. [n -S]

Medical Definition of Intrusive

1. Apt to intrude; characterised by intrusion; entering without right or welcome. Intrusive rocks, 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 with effusive or volcanic rocks. Intru"sively, Intru"siveness. Source: Websters Dictionary (01 Mar 1998)

Intrusive Pictures

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Lexicographical Neighbors of Intrusive

intruders
intrudes
intruding
intrudingly
intrudress
intrunk
intrunked
intrunking
intrunks
intruse
intrusion
intrusional
intrusionist
intrusionists
intrusions
intrusive
intrusive r
intrusively
intrusiveness
intrusivenesses
intrusives
intrust
intrusted
intrusting
intrusts
ints
intubate
intubated
intubates
intubating

Literary usage of Intrusive

Below you will find example usage of this term as found in modern and/or classical literature:

1. An Introduction to Geology by William Berryman Scott (1897)
"Contact of intrusive sheet of diabase with shales. ... or if pieces of the overlying stratum be torn off and included in the sheet, it must be intrusive. ..."

2. Structural and Field Geology for Students of Pure and Applied Science by James Geikie (1905)
"Sills or Intrusive Sheets appear to be much-denuded Laccoliths. ... We have thus two types of eruptive rocks, namely, effusive and intrusive, the latter of ..."

3. Structural and Field Geology for Students of Pure and Applied Science by James Geikie (1910)
"Sills or Intrusive Sheets appear to be much-denuded Laccoliths. ... We have thus two types of eruptive rocks, namely, effusive and intrusive, the latter of ..."

4. Igneous Rocks and Their Origin by Reginald Aldworth Daly (1914)
"An intrusive sheet or laccolith is generally continuous with its feeding dike or dikes. ... Even the distinction between intrusive and extrusive bodies is ..."

5. The Natural History of Igneous Rocks by Alfred Harker (1909)
"CHAPTER III IGNEOUS INTRUSION Geological and morphological classification of intrusive rock-bodies.— Concordant intrusions in plateau regions. ..."

6. Geology by Alexander Henry Green (1882)
"By all these signs then we are sure that the sheet is intrusive, and our conclusion is confirmed when we trace it towards the right, for we then find it ..."

7. Engineering Geology: By Heinrich Ries and Thomas L. Watson by Heinrich Ries, Thomas Leonard Watson (1914)
"(1) Those that have solidified at considerable depths beneath the surface, designated intrusive or plutonic; and (2) those that have solidified at or on the ..."

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