Definitions
Related Questions

base

base

[beys]
base: see acids and bases.

Collection of data or information organized for rapid search and retrieval, especially by a computer. Databases are structured to facilitate storage, retrieval, modification, and deletion of data in conjunction with various data-processing operations. A database consists of a file or set of files that can be broken down into records, each of which consists of one or more fields. Fields are the basic units of data storage. Users retrieve database information primarily through queries. Using keywords and sorting commands, users can rapidly search, rearrange, group, and select the field in many records to retrieve or create reports on particular aggregates of data according to the rules of the database management system being used.

Learn more about database with a free trial on Britannica.com.

In chemistry, any substance that in water solution is slippery to the touch, tastes bitter, changes the colour of acid-base indicators (e.g., litmus paper), reacts with acids to form salts, and promotes certain chemical reactions (e.g., base catalysis). Examples of bases are the hydroxides of the alkali metals and alkaline earth metals (sodium, calcium, etc.; see caustic soda) and the water solutions of ammonia or its derivatives (amines). Such substances produce hydroxide ions (OH) in water solutions. Broader definitions of bases cover situations in which water is not present. Seealso acid-base theory; alkali; nucleophile.

Learn more about base with a free trial on Britannica.com.

Base or BASE may refer to:A base is a mixture of urine n waste so do not eat it

  • Base meaning bottom, the lowest part of an object
  • base can mean negative, unfavorable or undesirable in nature. Bad; vile; malicious; evil.

In mathematics:

In the sciences:

  • Base (chemistry), a substance that can accept hydrogen ions (protons)
  • Base pair, a pair of connected nucleotides on complementary DNA and RNA strands
  • Nucleobase, in genetics, the parts of DNA and RNA involved in forming base pairs

In other fields:

Base may also refer to:

See also

References

Search another word or see baseon Dictionary | Thesaurus |Spanish
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature