chemistrynatural-sciencesphysical-sciencesAny of a class of generally water-soluble compounds that turn red litmus blue and react with acids to form salts.

Important areas in games and sports.

ball-gamesbaseballgamesImportant areas in games and sports.

architectureThe lowermost part of a column, between the shaft and the pedestal or pavement.

biochemistrybiologychemistryA nucleotide's nucleobase in the context of a DNA or RNA biopolymer.

biologybotanynatural-sciencesThe end of a leaf, petal or similar organ where it is attached to its support.

businesselectrical-engineeringelectricityThe name of the controlling terminal of a bipolar transistor (BJT).

geometrymathematicssciencesThe lowest side of a triangle or other polygon, or the lowest face of a cone, pyramid or other polyhedron laid flat.

governmentheraldryhobbiesThe lowest third of a shield (or field), or an ordinary occupying this space, the champagne. (Compare terrace.)

• The shield was silver, charged with a red cross voided (that is, with the centre cut out and only the edges left), between in chief (that is, above the horizontal limb of the cross) two black dragon's wings, and in base two red daggers, and in the centre of the cross a black winged helmet; on a red chief (a broad band across the top of the shield), a silver pale (a broad vertical band), and thereon eight black arrows crossed X-wise, four and four, and encircled with a black band, between on the dexter three bendlets (narrow bands slanting from dexter chief to sinister base) enhanced (that is, raised above the centre), and on the sinister a fleur-de-lis, all of gold.

mathematicssciencesA number raised to the power of an exponent.

• The logarithm to base 2 of 8 is 3.

mathematicssciencesSynonym of radix.

mathematicssciencestopologyThe set of sets from which a topology is generated.

mathematicssciencestopologyA topological space, looked at in relation to one of its covering spaces, fibrations, or bundles.

group-theorymathematicssciencesA sequence of elements not jointly stabilized by any nontrivial group element.

acrobaticsartscheerleadingIn hand-to-hand balance, the person who supports the flyer; the person that remains in contact with the ground.

human-scienceslinguisticssciencesA morpheme (or morphemes) that serves as a basic foundation on which affixes can be attached.

historicalgovernmentmilitarypoliticsThe smallest kind of cannon.

archaicThe housing of a horse.

historicalA kind of skirt (often of velvet or brocade) which hung from the middle to about the knees, or lower.

• […] with flowers of gold, the body lined with velvet, and the bases, or skirts, with satin; also a frock of black satin, lined with sarcenet, having three welts of the same.

historicalA kind of armour skirt, of mail or plate, imitating the preceding civilian skirt.

• The base (skirt), as opposed to the practical skirt of the tonlet armour, is an affectation in imitation of the civilian fabric garment of the period and may well have been inspired by a similar feature on Maximilian's gift armour.
• Both knee-length bases are made from black velvet [...] There was a second type of metal skirt that could be worn with armour: the tonlet. [...] Unlike the base, however, the tonlet did not have a textile counterpart. [...]

obsoleteThe lower part of a robe or petticoat.

obsoleteAn apron.

• bakers in their linen bases

A line in a survey which, being accurately determined in length and position, serves as the origin from which to compute the distances and positions of any points or objects connected with it by a system of triangles.

• Use the globe he inhabits as a base wherewith to measure the magnitude and distance of the sun and planets.

governmentpoliticsA group of voters who almost always support a single party's candidates for elected office.

The forces and relations of production that produce the necessities and amenities of life.

• What, then, in the last resort is the determining influence of the base on the superstructure, and what is the 'relative independence' possessed by the various forms of superstructure according to Engels and most theoretical Marxists?

A material that holds paint or other materials together; a binder.

slangfreebase cocaine

• TYLER LENNON (played by Louis Healy): Ten grand a week we were clearing: base, white, meth, weed, anything. I can get you anything to get you high.
• Shared you with my friends, the Pops they never had / You lived for our fishing trips, damn I had a dad / [...] / See, mine made sure he had every base covered / So imagine his pain finding base in the cupboard

obsoleteOf illegitimate birth; bastard.

• Why bastard? Wherefore base?

Not classical or correct.

• base Latin

lawRelating to feudal land tenure held by a tenant from a lord in exchange for services that are seen as unworthy for noblemen to perform, such as villeinage.

• A base estate is one held by services not honourable, or held by villenage. Such a tenure is called base, or low, and the tenant is a base tenant.