noun1. the bottom or supporting part of anything
2. the fundamental or underlying principle or part, as of an idea, system, or organization; basis
3. a. a centre of operations, organization, or supply
the climbers made a base at 8000 feet
b. (as modifier)
base camp
4. a centre from which military activities are coordinated
5. anything from which a process, as of measurement, action, or thought, is or may be
begun; starting point
the new discovery became the base for further research
6. the main ingredient of a mixture
to use rice as a base in cookery
7. a chemical compound that combines with an acid to form a salt and water. A solution
of a base in water turns litmus paper blue, produces hydroxyl ions, and has a pH greater than 7. Bases are metal oxides or hydroxides or amines
See also Lewis base
8. biochemistry
any of the nitrogen-containing constituents of nucleic acids: adenine, thymine (in DNA), uracil (in RNA), guanine, or cytosine
9. a medium such as oil or water in which the pigment is dispersed in paints, inks, etc; vehicle
10. the inorganic material on which the dye is absorbed in lake pigments; carrier
11. biologya. the part of an organ nearest to its point of attachment
b. the point of attachment of an organ or part
12. the bottommost layer or part of anything
13. architecturea. the lowest division of a building or structure
b. the lower part of a column or pier
14. another word for baseline (sense 2)
15. the lower side or face of a geometric construction
16. mathematicsa. the number of distinct single-digit numbers in a counting system, and so the number
represented as 10 in a place-value system
the binary system has two digits, 0 and 1, and 10 to base 2 represents 2
place-value
b. (of a logarithm or exponential) the number whose powers are expressed
since 1000 = 103, the logarithm of 1000 to base 10 is 3
c. (of a mathematical structure) a substructure from which the given system can be generated
d. the initial instance from which a generalization is proven by mathematical induction
17. Also called: base clause logic, mathematics
the initial element of a recursive definition, that defines the first element of the infinite sequence generated thereby
18. linguistics
b. base component
19. electronics
the region in a transistor between the emitter and collector
20. photography
the glass, paper, or cellulose-ester film that supports the sensitized emulsion with which it is coated
21. heraldry
the lower part of the shield
22. jewellery
the quality factor used in pricing natural pearls
23. a starting or finishing point in any of various games
24. baseball
any of the four corners of the diamond, which runners have to reach in order to score
25. the main source of a certain commodity or element
a customer base
their fan base
26. off base
27. touch base