'FOCAL' definitions:
Definition of 'focal'
From: WordNet
adjective
Having or localized centrally at a focus; "focal point"; "focal infection"
adjective
Of or relating to a focus; "focal length"
Definition of 'Focal'
From: GCIDE
- Focal \Fo"cal\, a. [Cf. F. focal. See Focus.] Belonging to,or concerning, a focus; as, a focal point. [1913 Webster]
- 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. [1913 Webster]
Synonyms of 'focal'
From: Moby Thesaurus
- approaching,
- arch,
- asymptotic,
- banner,
- basic,
- bedrock,
- capital,
- cardinal,
- central,
- centralized,
- centred,
- centripetal,
- centrolineal,
- champion,
- chief,
- concentrated,
- concurrent,
- confluent,
- confocal,
- connivent,
- convergent,
- converging,
- crowning,
- dominant,
- essential,
- first,
- foremost,
- fundamental,
- great,
- headmost,
- hegemonic,
- indispensable,
- leading,
- life-and-death,
- life-or-death,
- magisterial,
- main,
- master,
- material,
- meeting,
- mutually approaching,
- of vital importance,
- overruling,
- paramount,
- predominant,
- preeminent,
- preponderant,
- prevailing,
- primal,
- primary,
- prime,
- principal,
- radial,
- radiating,
- ranking,
- ruling,
- sovereign,
- star,
- stellar,
- substantive,
- supereminent,
- tangent,
- tangential,
- topflight,
- uniting,
- vital
Acronyms for 'FOCAL'
From: V.E.R.A.
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