- the distinctively treated portion of a column or pier below the shaft or shafts.
- the distinctively treated lowermost portion of any construction, as a monument, exterior wall, etc.
- the part of an organ nearest its point of attachment.
- the point of attachment.
- any of the four corners of the diamond, especially first, second, or third base.Compare home plate.
- a square canvas sack containing sawdust or some other light material, for marking first, second, or third base.
- a fortified or more or less protected area or place from which the operations of an army or an air force proceed.
- a supply installation for a large military force.
- the number that serves as a starting point for a logarithmic or other numerical system.
- a collection of subsets of a topological space having the property that every open set in the given topology can be written as the union of sets of the collection.
- a collection of neighborhoods of a point such that every neighborhood of the point contains one from the collection.
- a collection of sets of a given filter such that every set in the filter is contained in some set in the collection.
- a compound that reacts with an acid to form a salt, as ammonia, calcium hydroxide, or certain nitrogen-containing organic compounds.
- the hydroxide of a metal or of an electropositive element or group.
- a group or molecule that takes up or accepts protons.
- a molecule or ion containing an atom with a free pair of electrons that can be donated to an acid; an electron-pair donor.
- any of the purine and pyrimidine compounds found in nucleic acids: the purines adenine and guanine and the pyrimidines cytosine, thymine, and uracil.
- an electrode or terminal on a transistor other than the emitter or collector electrodes or terminals.
- the part of an incandescent lamp or electron tube that includes the terminals for making electrical connection to a circuit or power supply.
verb (used with object), based, bas·ing.
verb (used without object), based, bas·ing.
Idioms for base
- Baseball. not touching a base: The pitcher caught him off base and, after a quick throw, he was put out by the second baseman.
- Informal. badly mistaken: The police were way off base when they tried to accuse her of the theft.
Origin of base1
synonym study for base
OTHER WORDS FROM baseun·based, adjectivewell-based, adjective
Words nearby base
Example sentences from the Web for based
AirAsia Indonesia, which operated Flight 8501, is the Indonesian subsidiary of AirAsia, which is based in Malaysia.Annoying Airport Delays Might Prevent You From Becoming the Next AirAsia 8501|Clive Irving|January 6, 2015|DAILY BEAST
An 18-year-old Swedish rapper/Internet meme has inspired legions of impressionable teens to get based in bucket hats.The Cult of Yung Lean: ‘I’m Building An Anarchistic Society From the Ground Up’|Marlow Stern|January 4, 2015|DAILY BEAST
Based on a true story” is film code for “this may or may not have happened, but almost certainly not in this way.Wrestler Mark Schultz Hates the ‘Sickening and Insulting Lies’ of ‘Foxcatcher’|Rich Goldstein|December 31, 2014|DAILY BEAST
The latest disappearance is another huge aviation blow for Malaysia, where both Malaysia Airlines and AirAsia are based.The Presumed Crash of AirAsia Flight QZ8501 Is Nothing Like MH370|Lennox Samuels|December 29, 2014|DAILY BEAST
Based on the hat he had created for himself, Stetson made a version called “The Boss of the Plains.”
For his whole theory of cavalry tactics is based on the realisation that massive formations are now hopelessly out of date.Sir John French|Cecil Chisholm
At all events, his prediction was not based upon any such precise knowledge as that of the modern astronomer.A History of Science, Volume 1(of 5)|Henry Smith Williams
The chapters which fall within the line of our inquiry are based chiefly on a comparison between Western Europe and India.Villainage in England|Paul Vinogradoff
Page 423: January 1569 was printed as January 1659 and has been changed here, based on the dates earlier in the same sentence.
If our republicanism is based on other foundation than justice and humanity, let it fall forever.The Works of Whittier, Volume VII (of VII)|John Greenleaf Whittier
British Dictionary definitions for based (1 of 2)
- a centre of operations, organization, or supplythe climbers made a base at 8000 feet
- (as modifier)base camp
- the part of an organ nearest to its point of attachment
- the point of attachment of an organ or part
- the lowest division of a building or structure
- the lower part of a column or pier
- the number of distinct single-digit numbers in a counting system, and so the number represented as 10 in a place-value systemthe binary system has two digits, 0 and 1, and 10 to base two represents 2 See place-value
- (of a logarithm or exponential) the number whose powers are expressedsince 1000 = 10³, the logarithm of 1000 to base 10 is 3
- (of a mathematical structure) a substructure from which the given system can be generated
- the initial instance from which a generalization is proven by mathematical induction
- a root or stem
- See base component
Word Origin for base
British Dictionary definitions for based (2 of 2)
- (of land tenure) held by villein or other ignoble service
- holding land by villein or other ignoble service
Derived forms of basebasely, adverbbaseness, noun
Word Origin for base
Medical definitions for based
Scientific definitions for based
- Any of a class of compounds that form hydroxyl ions (OH) when dissolved in water, and whose aqueous solutions react with acids to form salts. Bases turn red litmus paper blue and have a pH greater than 7. Their aqueous solutions have a bitter taste. Compare acid.
- See nitrogen base.
- The side or face of a geometric figure to which an altitude is or is thought to be drawn. The base can be, but is not always, the bottom part of the figure.
- The number that is raised to various powers to generate the principal counting units of a number system. The base of the decimal system, for example, is 10.
- The number that is raised to a particular power in a given mathematical expression. In the expression an, a is the base.
Cultural definitions for based
Any of a number of bitter-tasting, caustic materials. Technically, a material that produces negative ions in solution. A base is the opposite of an acid and has a pH of 7 to 14. A given amount of a base added to the same amount of an acid neutralizes the acid; water and a salt are produced. Alkalis are bases; ammonia is a common base.
Idioms and Phrases with based
see get to first base; off base; touch base.