Definition of "base" in 英语

noun

Something from which other things extend; a foundation.
The starting point of a logical deduction or thought; basis.
A site, structure, or both, usually durable and often permanent, for housing military personnel and materiel.
The place where decisions for an organization are made; headquarters.
(cooking, painting, pharmacy) A basic but essential component or ingredient.
A substance used as a mordant in dyeing.
(cosmetics) Foundation: a cosmetic cream to make the face appear uniform.
(chemistry) Any 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.
(architecture) The lowermost part of a column, between the shaft and the pedestal or pavement.
(biology, biochemistry) A nucleotide's nucleobase in the context of a DNA or RNA biopolymer.
(botany) The end of a leaf, petal or similar organ where it is attached to its support.
(electronics) The name of the controlling terminal of a bipolar transistor (BJT).
(geometry) The lowest side of a triangle or other polygon, or the lowest face of a cone, pyramid or other polyhedron laid flat.
(heraldry) The lowest third of a shield (or field), or an ordinary occupying this space, the champagne. (Compare terrace.)
(mathematics) A number raised to the power of an exponent.
- The logarithm to base 2 of 8 is 3.
(mathematics) Synonym of radix.
(topology) The set of sets from which a topology is generated.
(topology) A topological space, looked at in relation to one of its covering spaces, fibrations, or bundles.
(group theory) A sequence of elements not jointly stabilized by any nontrivial group element.
(acrobatics, cheerleading) In hand-to-hand balance, the person who supports the flyer; the person that remains in contact with the ground.
(linguistics) A morpheme (or morphemes) that serves as a basic foundation on which affixes can be attached.
(music) Dated form of bass.
(military, historical) The smallest kind of cannon.
(archaic) The housing of a horse.
(historical, sometimes in the plural) A kind of skirt (often of velvet or brocade) which hung from the middle to about the knees, or lower.
(historical, sometimes in the plural) A kind of armour skirt, of mail or plate, imitating the preceding civilian skirt.

(obsolete) The lower part of a robe or petticoat.

(obsolete) An apron.

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.

(politics) A group of voters who almost always support a single party's candidates for elected office.

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

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

(aviation) Ellipsis of base leg.

(slang, uncountable) freebase cocaine

verb

(transitive) To give as its foundation or starting point; to lay the foundation of.
(transitive) To be located (at a particular place).
(acrobatics, cheerleading) To act as a base; to be the person supporting the flyer.
(slang) To freebase.

adjective

(obsolete) Low in height; short.
Low in place or position.
(obsolete) Of low value or degree.
(archaic) Of low social standing or rank; vulgar, common.
Morally reprehensible, immoral; cowardly.
(now rare) Inferior; unworthy, of poor quality.
(of a metal) Not considered precious or noble.
Alloyed with inferior metal; debased.
- base coin
- base bullion
(obsolete) Of illegitimate birth; bastard.
Not classical or correct.
Obsolete form of bass.
- the base tone of a violin
(law) Relating 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.

noun

(now chiefly US, historical) The game of prisoners' bars.

noun

Alternative form of BASE.