The reception of one part within
another.
The abnormal reception or
slipping of a part of a tube, by inversion and descent, within a
contiguous part of it; specifically, the reception or slipping of the
upper part of the small intestine into the lower; introsusception;
invagination.
The interposition of new
particles of formative material among those already existing, as in a
cell wall, or in a starch grain.
The act of taking
foreign matter, as food, into a living body; the process of
nutrition, by which dead matter is absorbed by the living organism,
and ultimately converted into the organized substance of its various
tissues and organs.
In celebration of Noah Webster's Birthday (October 16, 2009), we have prepared an updated website. 
