a device for showing the operating condition of some system | a flattened rigid plate forming part of the body covering of many animals |
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 | an indicator having a graduated sequence of marks |
a signal for attracting attention | a measuring instrument for weighing; shows amount of mass |
(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 metal sheathing of uniform thickness (such as the shield attached to an artillery piece to protect the gunners) |
| (music) a series of notes differing in pitch according to a specific scheme (usually within an octave) |
| a thin flake of dead epidermis shed from the surface of the skin |
| a specialized leaf or bract that protects a bud or catkin |
| relative magnitude |
| the ratio between the size of something and a representation of it |
| an ordered reference standard |