serving as or forming a base

of low birth or station (`base' is archaic in this sense)

debased; not genuine

illegitimate

(used of metals) consisting of or alloyed with inferior metal

not adhering to ethical or moral principles

*** before anything extra is added

a place with buildings and facilities for military operations and activities

the bottom portion or support of a column, pillar, or structure, providing stability and transitioning between the column and the ground or foundation

(chemistry) a substance that can accept protons, donate electrons, or release hydroxide ions in aqueous solution

a support or foundation

the fundamental assumptions from which something is begun or developed or calculated or explained

a lower limit

(anatomy) the part of an organ nearest its point of attachment

the bottom or lowest part

(electronics) the part of a transistor that separates the emitter from the collector

a flat bottom on which something is intended to sit

the stock of basic facilities and capital equipment needed for the functioning of a country or area

the principal ingredient of a mixture

the form to which affixes or other morphological operations are added to create a new word

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

the place where you are stationed and from which missions start and end

(numeration system) the positive integer that is equivalent to one in the next higher counting place

the most important or necessary part of something

the bottom side of a geometric figure from which the altitude can be constructed

a phosphoric ester of a nucleoside; the basic structural unit of nucleic acids (DNA or RNA)

to use purified cocaine by burning it and inhaling the resulting fumes

to situate or establish as a central location for operations, activities, or planning