Intrusive may refer to:
*
Intrusiveness, a typically unwelcome behavior, interrupting and disturbing to others
*
Intrusive rock
Intrusive rock is formed when magma penetrates existing rock, crystallizes, and solidifies underground to form ''Igneous intrusion, intrusions'', such as batholiths, dike (geology), dikes, Sill (geology), sills, laccoliths, and volcanic necks.I ...
, intrusion of molten magma leaving behind igneous rock
*
Saltwater intrusion, the movement of saline water into freshwater aquifers
*
Intrusive thought, an unwelcome involuntary thought, image, or unpleasant idea
*
Linking and intrusive R, in phonetics
See also
*
Intruder (disambiguation)
Intruder may refer to:
Film and television
* ''The Intruder'' (1914 film), directed by Wallace Reid
* ''The Intruder'' (1933 film), an American film by Albert Ray
* ''The Intruder'' (1939 film), ''La intrusa'', an Argentine film by Julio Sa ...
*
Invasive (disambiguation)
Invasive may refer to:
* Invasive (medical) procedure
*Invasive species
* Invasive observation, especially in reference to surveillance
*Invasively progressive spread of disease from one organ in the body to another, especially in reference to canc ...
{{disambiguation