| ordinal number | |
| —n | |
| 1. | Sometimes shortened to: ordinal a number denoting relative position in a sequence, such as first, second, third |
| 2. | logic, maths a measure of not only the size of a set but also the order of its elements |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a chattering or flighty, light-headed person. |
| ordinal number (ôr'dn-əl) Pronunciation Key
A number, such as 3rd, 11th, or 412th, used in counting to indicate position in a series but not quantity. Compare cardinal number. |