Base
Part of speech: noun
Definition: Something from which other things extend; a foundation. # A supporting, lower or bottom component of a structure or object. The starting point of a logical deduction or thought; (Basis). A permanent structure for housing military personnel and material. The place where decisions for an organization are made; headquarters. Any of a class of generally water-soluble compounds, having bitter taste, that turn red litmus blue, and react with acids to form salts. Important areas in games and sports The lowermost part of a column, between the shaft and the pedestal or pavement. One of the three places that a runner can stand without being subject to being tagged out. A nucleotide's nucleobase in the context of a DNA or RNA biopolymer. The end of a leaf, petal or similar organ where it is attached to its support. The name of the controlling terminal of a transistor. The lowest side of a in a triangle or other polygon, or the lowest face of a cone, pyramid or other polyhedron laid flat. A number raised to the power of an exponent. The set of sets from which a topology is generated. A topological space, looked at in relation to one of its covering spaces, fibrations, or bundles. A cheerleader who stays on the ground.
Part of speech: verb
Definition: To have as its foundation or starting point. To be located (at a particular place).
Part of speech: adjective
Definition: low inferior of low standing or rank immoral, cowardly common nonprecious used to describe metals which are not precious; base metal
Example sentence: SpaceX is only 12 years old now. Between now and 2040, the company's lifespan will have tripled. If we have linear improvement in technology, as opposed to logarithmic, then we should have a significant base on Mars, perhaps with thousands or tens of thousands of people.
Alkali
Part of speech: noun
Definition: Soda ash; caustic soda, caustic potash, etc.One of a class of caustic bases, such as soda, potash, ammonia, and lithia, whose distinguishing peculiarities are solubility in alcohol and water, uniting with oils and fats to form soap, neutralizing and forming salts with acids, turning to brown several vegetable yellows, and changing reddened litmus to blue.Soluble mineral matter, other than common salt, contained in soils of natural waters.