An entry into a place or area that was previously uncommon; an advance beyond former borders; intrusion; incursion.
That which is gained by such unlawful intrusion.
An intrusion upon another's possessions or rights; infringement.
An unlawful diminution of the possessions of another.
A setting about; a beginning.
The initial portion of a syllable, preceding the syllable nucleus.
The beginning of a musical note or other sound, in which the amplitude rises from zero to an initial peak.
The initial phase of a disease or condition, in which symptoms first become apparent.