intrusive

[ in-troo-siv ]
/ ɪnˈtru sɪv /

adjective

tending or apt to intrude; coming without invitation or welcome: intrusive memories of a lost love.
characterized by or involving intrusion.
intruding; thrusting in.
Geology.
  1. (of a rock) having been forced between preexisting rocks or rock layers while in a molten or plastic condition.
  2. noting or pertaining to plutonic rocks.
Phonetics. excrescent(def 2).

Origin of intrusive

late Middle English word dating back to 1375–1425; see origin at intrusion, -ive

SYNONYMS FOR intrusive

Related forms

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for non-intrusive

  • The internal body structure was visualized by using a simulation system similar to those utilized in non-intrusive surgery.

British Dictionary definitions for non-intrusive

intrusive

/ (ɪnˈtruːsɪv) /

adjective

characterized by intrusion or tending to intrude
(of igneous rocks) formed by intrusionCompare extrusive (def. 2)
phonetics relating to or denoting a speech sound that is introduced into a word or piece of connected speech for a phonetic rather than a historical or grammatical reason, such as the (r) often pronounced between idea and of in the idea of it

Derived Forms

intrusively, adverbintrusiveness, noun
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