![]() The descendants of the original Latin include focar (Spanish), fuoco (Italian), fokus (German), foco (Portuguese), and foc (Romanian). The way they got from fireplace or hearth to focusing a lens of glass was because they noticed the glass lens (magnifying glass) was able to catch paper on fire when it concentrated the beam of light to a fine point. Later in New Latin, it took on the scientific meaning to focus rays of light by using a glass lens. It originally meant a hearth or fireplace. You can trace the roots of the word to the Latin focus. The more commonly academically accepted word is foci, so for papers or homework, it would be the best idea to use that for the plural form of focus. The Latin way of making focus plural is foci whereas the American English way is focuses. As it is with many Latin words used in American English today, there is more than one correct an acceptable plural form. The word focus comes from the Latin language. What Is the Difference Between Focus and Foci? Newborn babies cannot focus for several months.to adjust one’s eye or a camera to a particular range.to bring (something, such as light rays) to a focus: CONCENTRATE.The results of that research were focused for classroom presentation. ![]() to adjust the focus of (the eye, a lens, etc.).focused their attention on the most urgent problems.: having or giving the proper sharpness of outline due to good focusing.: the place of origin of an earthquake or moonquake.: a localized area of disease or the chief site of a generalized disease or infection.: one of the fixed points that with the corresponding directrix defines a conic section.a point of convergence of a beam of particles (such as electrons).specifically: the point where the geometrical lines or their prolongations conforming to the rays diverging from or converging toward another point intersect and give rise to an image after reflection by a mirror or refraction by a lens or optical system.a point at which rays (as of light, heat, or sound) converge or from which they diverge or appear to diverge a convergence of light ellipse.also: the area that may be seen distinctly or resolved into a clear image.A state or condition permitting clear perception or understanding.Put immigration into focus as a hot topic for commentators.The primary focus of the meeting was drug abuse. ![]()
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