Answer: intrusions

AnswerCrossword Clue
INTRUSIONSBusybody's specialties.
intrusionsA body of igneous rock that has intruded the surrounding strata
intrusionsINTRUSION, the act of intruding
intrusionsA thing that intrudes
intrusionsThe action or process of forcing a body of igneous rock between or through existing formations, without reaching the surface
intrusionsThe action of intruding