The act of enclosing in a capsule; the growth of a membrane around (any part) so as to enclose it in a capsule.
(programming, object-oriented) Grouping together an object’s ‘state’ (its data) and the operations that may alter or interrogate it (its methods).
Huw Collingbourne, The Book of Ruby, ‘Encapsulation’ or ‘Information Hiding’?, page 140