ZebraWords.com - The Definition of 'Focal', Synonyms of 'Focal' & More on 'Focal'

1. Moby Thesaurus II by Grady Ward, 1.0

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

Dictionary Results for focal:

1. WordNet® 3.0 (2006)

focal
    adj 1: having or localized centrally at a focus; "focal point";
           "focal infection"
    2: of or relating to a focus; "focal length"

2. The Collaborative International Dictionary of English v.0.48

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]

3. V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016)

FOCAL
       FOrmula CALculator

4. The Free On-line Dictionary of Computing (30 December 2018)

FOCAL

   1. FOrmula CALculator.

   An interactive system written by Rick Merrill of DEC in 1969
   for PDP-5 and PDP-8.  It was a descendant of AID/JOSS.

   Versions: FOCAL-69, FOCAL-1971, FOCAL-11 (for PDP-11 under
   RT-11).

   (1994-12-21)

   2. Forty-One CAlculator Language.

   The programming language of the HP-41 calculator line.

   (1994-12-21)

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