FOCALLY
focally
(adverb) in a focal manner; “the submucosa was focally infiltrated”
Source: WordNet® 3.1
Etymology
Adverb
focally (comparative more focally, superlative most focally)
With respect to a focus
Source: Wiktionary
FOCAL
Fo"cal, a. Etym: [Cf.F. focal. See Focus.]
Definition: Belonging to,or concerning, a focus; as, a focal point. Focal
distance, or length,of a lens or mirror (Opt.), the distance of the
focus from the surface of the lens or mirror, or more exactly, in the
case of a lens, from its optical center. --Focal distance of a
telescope, the distance of the image of an object from the object
glass.
Source: Webster’s Unabridged Dictionary 1913 Edition