The astronomical system of units is a Dimensional analysis system, in that it defines units of length, mass and time.

"Language is a lot more like oatmeal, where there are some clearly defined units but it's very fuzzy around the edges."

Ontario is one such province that uses an extensive method to define ecological units.

While smaller groups within the Alps may be easily defined by the passes on either side, defining larger units can be problematic.

While baronies continue to be officially defined units, they have been administratively obsolete since 1898.

Of course, William Smith was defining lithostratigraphical rather than chronostratigraphical units, but the principle is the same.

In addition, the syntax has changed to define non-linear units, or also the database filename of your choice.

While baronies continue to be officially defined units, they are no longer used for many administrative purposes.

Political subdivision in the United States is a legal term used to define smaller governmental units which fall under the jurisdiction of the State government.

An understanding of the catena is established by distinguishing between the catena and other, similarly defined units.