a flattened rigid plate forming part of the body covering of many animals | a logarithmic scale of 1 to 10 (a successor to the Richter scale) that enables seismologists to compare the energy released by different earthquakes on the basis of the area of the geological fault that ruptured in the quake |
an indicator having a graduated sequence of marks | |
a measuring instrument for weighing; shows amount of mass | |
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 | |