a.

1. 實驗性的；試驗性的
   This is an experimental form of teaching.

   這是一種實驗性的教學形式。

2. 根據實驗的；實驗用的
   There is no experimental evidence for the theory.

   這一理論還沒有實踐依據。

adj.

1. based on untested ideas or techniques and not yet established or finalized.
   ▸relating to scientific experiments.
2. (of art) radically new and innovative.
3. archaic based on experience as opposed to authority or conjecture.