| autofocus | (noun) an optical device for focussing a camera or other instrument automatically | - |
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| bifocal | (adjective) having two foci | - |
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| bifocals | (noun) (plural) eyeglasses having two focal lengths, one for near vision and the other for far vision | - |
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| focal | (adjective) of or relating to a focus | - |
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| (adjective) having or localized centrally at a focus | - |
| focalisation | (noun) the act of bringing into focus | Synonyms: focalization, focusing |
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| (noun) the confinement of an infection to a limited area | Synonyms: focalization |
| focalise | (verb) become focussed or come into focus | Synonyms: focalize, focus |
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| (verb) put (an image) into focus | Synonyms: focalize, focus, sharpen |
| (verb) bring into focus or alignment; to converge or cause to converge; of ideas or emotions | Synonyms: concenter, concentre, focalize, focus |
| (verb) concentrate on a particular place or spot | Synonyms: focalize, localise, localize |
| focalization | (noun) the act of bringing into focus | Synonyms: focalisation, focusing |
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| (noun) the confinement of an infection to a limited area | Synonyms: focalisation |
| focalize | (verb) become focussed or come into focus | Synonyms: focalise, focus |
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| (verb) put (an image) into focus | Synonyms: focalise, focus, sharpen |
| (verb) bring into focus or alignment; to converge or cause to converge; of ideas or emotions | Synonyms: concenter, concentre, focalise, focus |
| (verb) concentrate on a particular place or spot | Synonyms: focalise, localise, localize |
| focally | (adverb) in a focal manner | - |
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| focus | (noun) maximum clarity or distinctness of an image rendered by an optical system | - |
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| (noun) maximum clarity or distinctness of an idea | - |
| (noun) the concentration of attention or energy on something | Synonyms: centering, centring, direction, focal point, focusing, focussing |
| (noun) a fixed reference point on the concave side of a conic section | - |
| (noun) a point of convergence of light (or other radiation) or a point from which it diverges | Synonyms: focal point |
| (noun) a central point or locus of an infection in an organism | Synonyms: focal point, nidus |
| (noun) special emphasis attached to something | Synonyms: stress |
| (verb) become focussed or come into focus | Synonyms: focalise, focalize |
| (verb) put (an image) into focus | Synonyms: focalise, focalize, sharpen |
| (verb) direct one's attention on something | Synonyms: center, centre, concentrate, pore, rivet |
| (verb) bring into focus or alignment; to converge or cause to converge; of ideas or emotions | Synonyms: concenter, concentre, focalise, focalize |
| (verb) cause to converge on or toward a central point | - |
| focused | (adjective) being in focus or brought into focus | Synonyms: focussed |
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| (adjective) of an optical system (e.g. eye or opera glasses) adjusted to produce a clear image | - |
| (adjective) (of light rays) converging on a point | Synonyms: focussed |
| focusing | (noun) the act of bringing into focus | Synonyms: focalisation, focalization |
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| (noun) the concentration of attention or energy on something | Synonyms: centering, centring, direction, focal point, focus, focussing |
| focussed | (adjective) being in focus or brought into focus | Synonyms: focused |
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| (adjective) (of light rays) converging on a point | Synonyms: focused |
| focussing | (noun) the concentration of attention or energy on something | Synonyms: centering, centring, direction, focal point, focus, focusing |
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| refocus | (verb) put again into focus or focus more sharply | - |
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| (verb) focus anew | - |
| (verb) focus once again | - |
| refocusing | (noun) focusing again | - |
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| suffocate | (verb) struggle for breath; have insufficient oxygen intake | Synonyms: choke, gag, strangle |
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| (verb) feel uncomfortable for lack of fresh air | - |
| (verb) be asphyxiated; die from lack of oxygen | Synonyms: asphyxiate, stifle |
| (verb) suppress the development, creativity, or imagination of | Synonyms: choke |
| (verb) become stultified, suppressed, or stifled | Synonyms: choke |
| (verb) deprive of oxygen and prevent from breathing | Synonyms: asphyxiate, smother |
| (verb) impair the respiration of or obstruct the air passage of | Synonyms: asphyxiate, choke, stifle |
| suffocating | (adjective) causing difficulty in breathing especially through lack of fresh air and presence of heat | Synonyms: choking, smothering, suffocative |
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| suffocation | (noun) killing by depriving of oxygen | Synonyms: asphyxiation |
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| (noun) the condition of being deprived of oxygen (as by having breathing stopped) | Synonyms: asphyxiation |
| suffocative | (adjective) causing difficulty in breathing especially through lack of fresh air and presence of heat | Synonyms: choking, smothering, suffocating |
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| unfocused | (adjective) (of an image) not being in or brought into focus | Synonyms: unfocussed |
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| (adjective) not concentrated at one point or upon one objective | Synonyms: unfocussed |
| unfocussed | (adjective) (of an image) not being in or brought into focus | Synonyms: unfocused |
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| (adjective) not concentrated at one point or upon one objective | Synonyms: unfocused |