n.
any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water
"bases include oxides and hydroxides of metals and ammonia"
同义词:alkali
installation from which a military force initiates operations
"the attack wiped out our forward bases"
同义词:base of operations
lowest support of a structure
"it was built on a base of solid rock"
同义词:foundationfundamentfootgroundworksubstructureunderstructure
place that runner must touch before scoring
同义词:bag
(numeration system) the positive integer that is equivalent to one in the next higher counting place
同义词:radix
the bottom or lowest part
"the base of the mountain"
(anatomy) the part of an organ nearest its point of attachment
"the base of the skull"
a lower limit
同义词:floor
the fundamental assumptions from which something is begun or developed or calculated or explained
同义词:basisfoundationfundamentgroundworkcornerstone
a support or foundation
"the base of the lamp"
同义词:pedestalstand
the bottom side of a geometric figure from which the altitude can be constructed
"the base of the triangle"
the most important or necessary part of something
同义词:basis
the place where you are stationed and from which missions start and end
同义词:home
a terrorist network intensely opposed to the United States that dispenses money and logistical support and training to a wide variety of radical Islamic terrorist groups; has cells in more than 50 countries
同义词:al-QaedaQaedaal-Qa'idaal-Qaida
(linguistics) the form of a word after all affixes are removed
同义词:rootroot wordstemthemeradical
the stock of basic facilities and capital equipment needed for the functioning of a country or area
"the industrial base of Japan"
同义词:infrastructure
the principal ingredient of a mixture
"glycerinated gelatin is used as a base for many ointments"; "he told the painter that he wanted a yellow base with just a hint of green"; "everything she cooked seemed to have rice as the base"
a flat bottom on which something is intended to sit
"a tub should sit on its own base"
(electronics) the part of a transistor that separates the emitter from the collector