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foci

See definition of foci on Dictionary.com

synonyms for foci

  • focal point
  • spotlight
  • target
  • center
  • core
  • cynosure
  • headquarters
  • heart
  • hub
  • limelight
  • locus
  • polestar
  • seat
  • bull's eye
  • meeting place
  • nerve center
  • point of convergence
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antonyms for foci

MOST RELEVANT
  • exterior
  • exteriority
  • outside
  • periphery
  • surface
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

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How to use foci in a sentence

In an orbit made elliptical by the planetary attraction the sun necessarily occupies one of the foci of the ellipse.
OUTLINES OF THE EARTH'S HISTORYNATHANIEL SOUTHGATE SHALER
That an ellipse may be given any required proportion of width to length by locating the foci at the requisite distance apart.
MECHANICAL DRAWING SELF-TAUGHTJOSHUA ROSE
That the proportion of length to width in an ellipse is determined by the distance apart of the foci.
MECHANICAL DRAWING SELF-TAUGHTJOSHUA ROSE
The curve thus traced will be an ellipse having the pins at the two points which are called its foci.
A TEXT-BOOK OF ASTRONOMYGEORGE C. COMSTOCK
These are at points on the principal axis that are twice as far from O, the center of the lens, as are the principal foci.
PHYSICSWILLIS EUGENE TOWER
Two ellipsoids in which the principal sections lie in the same planes, and have the same foci, are called confocal.
THE NEW GRESHAM ENCYCLOPEDIAVARIOUS
In barbarous places, the legions that were intended as garrisons proved to be foci of civilization.
HISTORY OF THE INTELLECTUAL DEVELOPMENT OF EUROPE, VOLUME I (OF 2)JOHN WILLIAM DRAPER
Their physicians were their great philosophers; their medical colleges were their foci of learning.
HISTORY OF THE INTELLECTUAL DEVELOPMENT OF EUROPE, VOLUME I (OF 2)JOHN WILLIAM DRAPER
Foci of pus occur throughout the gland, causing destruction of the tissue, so that the gland may become a single abscess cavity.
ENCYCLOPAEDIA BRITANNICA, 11TH EDITION, VOLUME 17, SLICE 2VARIOUS
With the Williamson camera focussing is unnecessary within certain distances owing to the fixed foci of the stops.
PRACTICAL CINEMATOGRAPHY AND ITS APPLICATIONSFREDERICK ARTHUR AMBROSE TALBOT
SYNONYM OF THE DAY
OCTOBER 26, 1985
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