1. (

• invasion ,
• encroachment ,
• intrusion

) any entry into an area not previously occupied; "an invasion of tourists"; "an invasion of locusts" ;

2. (

• intrusion ,

) entrance by force or without permission or welcome ;

3. (

• intrusion

) the forcing of molten rock into fissures or between strata of an earlier rock formation ;

4. (

• intrusion

) rock produced by an intrusive process ;

5. (

• trespass ,
• encroachment ,
• violation ,
• intrusion ,
• usurpation ,

) entry to another's property without right or permission ;