1) Eruptive 2) Granite or diorite or gabbro 3) Intrusive 4) Plutonic 5) Rushing in or upon 1) Plutonic 
• (a.) Rushing in or upon.
Relating to or characterised by irruption. ... (05 Mar 2000) ... 
Ir·rup'tive adjective Rushing in or upon. 
Type: Term Pronunciation: i-rŭp′tiv Definitions: 1. Relating to or characterized by irruption.
[adj] - igneous rock that has solidified beneath the earth`s surface
A species which migrates to an area irregularly - only during exceptional conditions, such as adverse weather or lack of food. Irruptive species which we may see in our gardens include Bramblings, Waxwings or Crossbills. Strictly speaking, irruptions are distinct from migrations as they are not a regular movement.
where certain species of birds may be seen in one year but not in the next, unpredictable.
plutonic adjective of igneous rock that has solidified beneath the earth`s surface; granite or diorite or gabbro
of, pertaining to, or characterized by irruption. · irrupting or tending to irrupt. · intrusive.