Adjective
Pertaining
to
a
trial
or
test
.
Noun
An
occasion
on
which
a
person
or
thing
is
tested
to
find
out
how
well
they
perform
or
how
suitable
they
are
.
Verb
To
carry
out
a
series
of
tests
on
(
a
new
product
,
procedure
etc
.)
before
marketing
or
implementing
it
.