DERIVABLY
Etymology
Adverb
derivably (not comparable)
Such that it can be derived; by derivation.
Source: Wiktionary
De*riv"a*bly, adv.
Definition: By derivation.
DERIVABLE
De*riv"a*ble, a. Etym: [From Derive.]
Definition: That can be derived; obtainable by transmission; capable of
being known by inference, as from premises or data; capable of being
traced, as from a radical; as, income is derivable from various
sources.
All honor derivable upon me. South.
The exquisite pleasure derivable from the true and beautiful
relations of domestic life. H. G. Bell.
The argument derivable from the doxologies. J. H. Newman.
Source: Webster’s Unabridged Dictionary 1913 Edition