<s>
In	O
programming	O
languages	O
,	O
type	B-General_Concept
erasure	I-General_Concept
is	O
the	O
load-time	B-Operating_System
process	O
by	O
which	O
explicit	O
type	O
annotations	O
are	O
removed	O
from	O
a	O
program	O
,	O
before	O
it	O
is	O
executed	O
at	O
run-time	B-Library
.	O
</s>
<s>
Type-erasure	O
semantics	O
is	O
an	O
abstraction	O
principle	O
,	O
ensuring	O
that	O
the	O
run-time	B-Library
execution	O
of	O
a	O
program	O
does	O
n't	O
depend	O
on	O
type	O
information	O
.	O
</s>
<s>
In	O
the	O
context	O
of	O
generic	B-Language
programming	I-Language
,	O
the	O
opposite	O
of	O
type	B-General_Concept
erasure	I-General_Concept
is	O
named	O
reification	O
.	O
</s>
<s>
Though	O
type	B-General_Concept
erasure	I-General_Concept
can	O
be	O
an	O
easy	O
way	O
to	O
define	O
typing	O
over	O
implicitly	O
typed	O
languages	O
(	O
an	O
implicitly	O
typed	O
term	O
is	O
well-typed	O
if	O
and	O
only	O
if	O
it	O
is	O
the	O
erasure	O
of	O
a	O
well-typed	O
explicitly	O
typed	O
lambda	O
term	O
)	O
,	O
it	O
does	O
n't	O
require	O
an	O
algorithm	O
to	O
check	O
implicitly	O
typed	O
terms	O
.	O
</s>
