| verb | make denser, stronger, or purer “concentrate juice” |
| verb | direct one's attention on something “Please focus on your studies and not on your hobbies” |
| verb | make central “The Russian government centralized the distribution of food” |
| verb | make more concise “condense the contents of a book into a summary” |
| verb | draw together or meet in one common center “These groups concentrate in the inner cities” |
| verb | compress or concentrate “Congress condensed the three-year plan into a six-month plan” |
| verb | be cooked until very little liquid is left “The sauce should reduce to one cup” |
| verb | cook until very little liquid is left “The cook reduced the sauce by boiling it for a long time” |
| adjective | gathered together or made less diffuse “their concentrated efforts” |
| adjective | of or relating to a solution whose dilution has been reduced |
| adjective | intensely focused “her concentrated passion held them at bay” |
| adjective | (of light) transmitted directly from a pointed light source |
| adjective | being the most concentrated solution possible at a given temperature; unable to dissolve still more of a substance “a saturated solution” |
| concentration | noun | increase in density |
| concentrate | noun | the desired mineral that is left after impurities have been removed from mined ore |
| focus | noun | the concentration of attention or energy on something |
| focussing | noun | the concentration of attention or energy on something |
| focusing | noun | the concentration of attention or energy on something |
| center | noun | the object upon which interest and attention focuses |
| centering | noun | the concentration of attention or energy on something |
| centralization | noun | gathering to a center |
| centralisation | noun | gathering to a center |
| digest | noun | something that is compiled (as into a single book or file) |
| condenser | noun | lens used to concentrate light on an object |
| condensation | noun | a shortened version of a written work |
| contraction | noun | the act of decreasing (something) in size or volume or quantity or scope |