from
The Collaborative International Dictionary of English v.0.48
Observable \Ob*serv"a*ble\, a. [L. observabilis: cf. F.
observable.]
1. Capable of being observed; discernible; noticeable. --Sir.
T. Browne.
[1913 Webster]
The difference is sufficiently observable.
--Southey.
[1913 Webster]
2. Worthy of being observed; important enough to be noted or
celebrated; as, an observable anniversary.
[PJC]
3. Noteworthy; remarkable.
[PJC] -- {Ob*serv"a*ble*ness}, n. -- {Ob*serv"a*bly}, adv.
[1913 Webster]