The lowest part or edge of something, especially the part on which it rests or is supported. The base of the statue was made of marble.
A conceptual structure or entity on which something draws or depends. The company's customer base has grown significantly over the past year.
A place used as a center of operations by the armed forces or others; a headquarters. The military base was located near the coast.
In baseball, one of the four stations that must be reached in turn to score a run. The runner slid into second base just in time.
A main or important ingredient to which other things are added. The base of the soup was a rich chicken broth.
A substance that can accept hydrogen ions (protons) or more generally, donate a pair of valence electrons. Sodium hydroxide is a common base used in chemical reactions.
The number that is raised to a power in mathematics, or the number of different digits used in a numeral system. In binary, the base is 2.
The part of a word to which affixes are attached; a root or stem. In the word 'redoing', 'do' is the base, while 're-' and '-ing' are affixes.