a device for showing the operating condition of some system | the act of referring or consulting |
a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time | the most direct or specific meaning of a word or expression; the class of objects that an expression refers to |
a signal for attracting attention | the relation between a word or phrase and the object or idea it refers to |
(chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction | a formal recommendation by a former employer to a potential future employer describing the person's qualifications and dependability |
| a remark that calls attention to something or someone |
| a short note recognizing a source of information or of a quoted passage |
| a book to which you can refer for authoritative facts |
| an indicator that orients you generally |
| a publication (or a passage from a publication) that is referred to |
| (computer science) the code that identifies where a piece of information is stored |