A copy on paper of a graphics or map image originally displayed on a CRT.

Oscillatory rise and fall of a ship due to the entire hull being lifted by the force of the sea

Distance of a point from a chosen reference surface positive upward along a line perpendicular to that surface

A database that stores related information in terms of pre-defined categorical relationships in a `tree-like` fashion. Information is traced from a major group, to a subgroup, and to further subgroups. Much like tracing a family tree, data can be traced through parents along paths through the hierarchy. Users must keep track of the hierarchical structure in order to make use of the data. The relational database provides an alternative means of organizing datasets.

Relationship between two domains (such as two complexes) such that there is a structure preserving function from one to the other

Relation between designations and concepts in a given language in which one designation represents two or more unrelated concepts

One of two or more words that are pronounced the same but differ in meaning, origin, and sometimes spelling.
 

Positional accuracy of a dataset with respect to a horizontal datum.

The measurement and description of water bodies.

[ GIS dictionary ] Hypsography is the geographic representation of features on a map related to elevation, altitude and height above sea-level from a reference surface. (Hypso is Greek for height)