Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

EXAMPLES FROM THE WEB FOR FOCUSES

It focuses all the impulses towards good and concentrates them.

The focuses of most earthquakes are concentrated in the crust and upper mantle.

The only real places of meeting, or focuses of news, are the cafés.

The peculiarity of these focuses of moral putrefaction is, to reduce all the races of mankind to the same level.

Such a day does not often come upon the river, but if it does, the deep channel of the Isisi focuses all the joy of it.

He is doing us a favor when he focuses our attention upon one special object and makes us see it clearly.

The buildings, especially the homes, are largely of wood; the recurring feature is the bay window that focuses the light and heat.

Attention is the power which focuses pictures on the screen of the mind.

Politics, even when it acknowledges globality, focuses on national definitions.

It provides for good soundbites, it raises the fighting spirits at home and it focuses attention and energy on the enemy.

WORD ORIGIN

1640s, from Latin focus "hearth, fireplace" (also, figuratively, "home, family"), of unknown origin, used in post-classical times for "fire" itself, taken by Kepler (1604) in a mathematical sense for "point of convergence," perhaps on analogy of the burning point of a lens (the purely optical sense of the word may have existed before Kepler, but it is not recorded). Introduced into English 1650s by Hobbes. Sense transfer to "center of activity or energy" is first recorded 1796.