Focus — Fo cus (f[=o] k[u^]s), n.; pl. E. {Focuses} (f[=o] k[u^]s*[e^]z), L. {Foci} (f[=o] s[imac]). [L. focus hearth, fireplace; perh. akin to E. bake. Cf. {Curfew}, {Fuel}, {Fusil} the firearm.] 1. (Opt.) A point in which the rays of light meet, after… … The Collaborative International Dictionary of English
Focus tube — Focus Fo cus (f[=o] k[u^]s), n.; pl. E. {Focuses} (f[=o] k[u^]s*[e^]z), L. {Foci} (f[=o] s[imac]). [L. focus hearth, fireplace; perh. akin to E. bake. Cf. {Curfew}, {Fuel}, {Fusil} the firearm.] 1. (Opt.) A point in which the rays of light meet,… … The Collaborative International Dictionary of English
focus — fo‧cus [ˈfəʊkəs ǁ ˈfoʊ ] noun [uncountable] MARKETING when a company tries to serve particular groups of customers in a market with particular needs, rather than trying to serve the whole market focuser noun [countable] : • The focuser seeks to… … Financial and business terms
Focus — Fo cus, v. t. [imp. & p. p. {Focused}; p. pr. & vb. n. {Focusing}.] To bring to a focus; to focalize; as, to focus a camera. R. Hunt. [1913 Webster] … The Collaborative International Dictionary of English
focus — fo|cus1 [ foukəs ] (present participle fo|cus|ing or fo|cus|sing; past tense and past participle fo|cused or fo|cussed) verb intransitive or transitive *** 1. ) to concentrate on something and pay particular attention to it: I know you re tired,… … Usage of the words and phrases in modern English
focus — 1. (F) The point at which the light rays meet after passing through a convex lens. 2. The center, or the starting point, of a disease process. [L. a hearth] conjugate foci two points so related to a lens or … Medical dictionary
focus — fo•cus [[t]ˈfoʊ kəs[/t]] n. pl. cus•es, ci ( sī, kī) 1) a central point, as of attention or activity 2) phs a point at which rays of light, heat, or other radiation meet after being refracted or reflected 3) opt a) the focal point of a lens b)… … From formal English to slang
focus — 1fò·cus s.m.inv., lat. 1. TS med. punto di impianto di un infezione che preesiste nell organismo per lo più in forma latente e da cui si sviluppa l infezione secondaria Sinonimi: focolaio di infezione. 2. TS geol. → fuoco {{line}} {{/line}} DATA … Dizionario italiano
Aplanatic focus — Focus Fo cus (f[=o] k[u^]s), n.; pl. E. {Focuses} (f[=o] k[u^]s*[e^]z), L. {Foci} (f[=o] s[imac]). [L. focus hearth, fireplace; perh. akin to E. bake. Cf. {Curfew}, {Fuel}, {Fusil} the firearm.] 1. (Opt.) A point in which the rays of light meet,… … The Collaborative International Dictionary of English
Conjugate focus — Focus Fo cus (f[=o] k[u^]s), n.; pl. E. {Focuses} (f[=o] k[u^]s*[e^]z), L. {Foci} (f[=o] s[imac]). [L. focus hearth, fireplace; perh. akin to E. bake. Cf. {Curfew}, {Fuel}, {Fusil} the firearm.] 1. (Opt.) A point in which the rays of light meet,… … The Collaborative International Dictionary of English
Principal focus — Focus Fo cus (f[=o] k[u^]s), n.; pl. E. {Focuses} (f[=o] k[u^]s*[e^]z), L. {Foci} (f[=o] s[imac]). [L. focus hearth, fireplace; perh. akin to E. bake. Cf. {Curfew}, {Fuel}, {Fusil} the firearm.] 1. (Opt.) A point in which the rays of light meet,… … The Collaborative International Dictionary of English
