1.
Something that is ~ is new or uses new ideas or methods, and might be modified later if it is unsuccessful.
...an ~ air conditioning system...
The technique is ~, but the list of its practitioners is growing.
ADJ
2.
Experimental means using, used in, or resulting from scientific experiments.
...the main techniques of ~ science.
ADJ: ADJ n
~ly
...an ecology laboratory, where communities of species can be studied ~ly under controlled conditions.
ADV: ADV with v
3.
An ~ action is done in order to see what it is like, or what effects it has.
The British Sports Minister is reported to be ready to argue for an ~ lifting of the ban.
ADJ: usu ADJ n
~ly
This system is being tried out ~ly at many universities...
ADV: ADV with v