. (Physics & Chem.) a particle emitted at high velocity from certain radioactive substances. It is identical to the helium nucleus, consisting of two protons and two neutrons. Rays of such particles are called alpha rays. [ Webster 1913 Suppl. +PJC ]

n. (Physics) A fundamental particle which has the same mass as one of the common fundamental particles, but which has an opposite charge, and for which certain other of the properties (e. g. baryon number, strangeness) may be opposite to that of the normal particle. The antiparticle to an electron is called a positron; the antiparticle to a proton is called an antiproton; the antiparticle to a neutron is called an antineutron. When a particle and its corresponding antiparticle collide, they typically annihilate each other with the production of large quantities of energy, usually in the form of radiation. The interaction of a proton and antiproton cause annihilation with production of mesons. [ PJC ]

a. (Chem.) Pertaining to, or derived, asparagine; as, aspartic acid. [ 1913 Webster ]

a. [ Cf. F. bipartible. See Bipartite. ] Capable of being divided into two parts. [ 1913 Webster ]

a. [ L. bis twice + partiens, p. pr. of partire to divide. ] Dividing into two parts. -- n. A number that divides another into two equal parts without a remainder. [ 1913 Webster ]

a. Divisible into two parts. [ 1913 Webster ]

a. [ L. bipartitus, p. p. of bipartire; bis twice + partire. See Partite. ] 1. Being in two parts; having two correspondent parts, as a legal contract or writing, one for each party; shared by two; as, a bipartite treaty. [ 1913 Webster ]

2. Divided into two parts almost to the base, as a leaf; consisting of two parts or subdivisions. Gray. [ 1913 Webster ]

n. The act of dividing into two parts, or of making two correspondent parts, or the state of being so divided. [ 1913 Webster ]

n. The policy of Bonaparte or of the Bonapartes. [ 1913 Webster ]

n. One attached to the policy or family of Bonaparte, or of the Bonapartes. [ 1913 Webster ]

n. a genus containing two species of small New Zealand trees: weeping tree broom; endangered.
Syn. -- genus Chordospartium. [ WordNet 1.5 ]

n. [ LL. compartitio. ] The act of dividing into parts or compartments; division; also, a division or compartment. [ Obs. ] [ 1913 Webster ]

Their temples . . . needed no compartitions. Sir H. Wotton. [ 1913 Webster ]

adj. leaving a starting or stopping point on a journey; as, Departing flights were delayed by the snowstorm. Opposite of arriving. [ prenominal ]
Syn. -- outbound, outward, outward-bound. [ WordNet 1.5 +PJC ]

a. [ L. digitus finger + partite. ] (Bot.) Parted like the fingers. [ 1913 Webster ]

a. [ Pref. im- not + partial: cf. F. impartial. ] Not partial; not favoring one more than another; treating all alike; unprejudiced; unbiased; disinterested; equitable; fair; just. Shak. [ 1913 Webster ]

Jove is impartial, and to both the same. Dryden. [ 1913 Webster ]

A comprehensive and impartial view. Macaulay. [ 1913 Webster ]

n. One who is impartial. [ R. ] Boyle. [ 1913 Webster ]

n. [ Cf. F. impartialité. ] The quality of being impartial; freedom from bias or favoritism; disinterestedness; equitableness; fairness; as, impartiality of judgment, of treatment, etc. [ 1913 Webster ]

Impartiality strips the mind of prejudice and passion. South. [ 1913 Webster ]

a. In an impartial manner. [ 1913 Webster ]

n. Impartiality. Sir W. Temple. [ 1913 Webster ]

n. [ Cf. F. impartibilité. ] The quality of being incapable of division into parts; indivisibility. Holland. [ 1913 Webster ]

n. The quality of being impartible; communicability. Blackstone. [ 1913 Webster ]

a. [ From Impart. ] Capable of being imparted or communicated. [ 1913 Webster ]

a. [ Pref. im- not + partible: cf. F. impartible. ] Not partible; not subject to partition; indivisible; as, an impartible estate. Blackstone. [ 1913 Webster ]

n. Jeopardy. [ Obs. ] Chaucer. [ 1913 Webster ]

a. [ L. multipartitus multus much, many partitus divided, p. p.: cf. F. multipartite. See Partite. ] Divided into many parts; having several parts. [ 1913 Webster ]

n. withdrawing from the activities of a group.
Syn. -- non-engagement, non-involvement. [ WordNet 1.5 ]

adj. not particulate. Opposite of particulate. [ WordNet 1.5 ]

adj. 1. free from party affiliation or bias. Opposite of partisan. [ Narrower terms: bipartisan, bipartizan, two-party, two-way; independent ] [ Narrower terms: nonparty, non-party ]
Syn. -- nonpartizan. [ WordNet 1.5 ]

2. not affiliated with any one party; as, a nonpartisan commission to study crime. [ WordNet 1.5 ]

n. An inclination to weigh both views or opinions equally; absence of bias toward any particular party.
Syn. -- impartiality. [ WordNet 1.5 ]

adj. 1. same as nonpartisan, 1.
Syn. -- nonpartisan. [ WordNet 1.5 ]

a. [ F., fr. LL. partials, fr. L. pars, gen. partis, a part; cf. (for sense 1) F. partiel. See Part, n. ] 1. Of, pertaining to, or affecting, a part only; not general or universal; not total or entire; as, a partial eclipse of the moon. “Partial dissolutions of the earth.” T. Burnet. [ 1913 Webster ]

2. Inclined to favor one party in a cause, or one side of a question, more then the other; biased; not indifferent; as, a judge should not be partial. [ 1913 Webster ]

Ye have been partial in the law. Mal. ii. 9. [ 1913 Webster ]

3. Having a predilection for; inclined to favor unreasonably; foolishly fond. “A partial parent.” Pope. [ 1913 Webster ]

Not partial to an ostentatious display. Sir W. Scott. [ 1913 Webster ]

4. (Bot.) Pertaining to a subordinate portion; as, a compound umbel is made up of a several partial umbels; a leaflet is often supported by a partial petiole. [ 1913 Webster ]

Partial differentials,
Partial differential coefficients,
Partial differentiation, etc. (of a function of two or more variables), the differentials, differential coefficients, differentiation etc., of the function, upon the hypothesis that some of the variables are for the time constant. --
Partial fractions (Alg.), fractions whose sum equals a given fraction. --
Partial tones (Music), the simple tones which in combination form an ordinary tone; the overtones, or harmonics, which, blending with a fundamental tone, cause its special quality of sound, or timbre, or tone color. See, also, Tone. [ 1913 Webster ]

n. Partiality; specifically (Theol.), the doctrine of the Partialists. [ 1913 Webster ]

n. 1. One who is partial. [ R. ] [ 1913 Webster ]

2. (Theol.) One who holds that the atonement was made only for a part of mankind, that is, for the elect. [ 1913 Webster ]

n. [ Cf. F. partialité. ] 1. The quality or state of being partial; inclination to favor one party, or one side of a question, more than the other; undue bias of mind. [ 1913 Webster ]

2. A predilection or inclination to one thing rather than to others; special taste or liking; as, a partiality for poetry or painting. Roget. [ 1913 Webster ]

v. t. & i. To make or be partial. [ R. ] [ 1913 Webster ]

adv. 1. In part; not totally; as, partially true; the sun partially eclipsed. Sir T. Browne. [ 1913 Webster ]

2. In a partial manner; with undue bias of mind; with unjust favor or dislike; as, to judge partially. Shak. [ 1913 Webster ]

n. [ From Partible. ] The quality or state of being partible; divisibility; separability; as, the partibility of an inherttance. [ 1913 Webster ]

a. [ L. partibilis, fr. partire to part, divide, fr. L. pars: cf. F. partible. See Part. ] Admitting of being parted; divisible; separable; susceptible of severance or partition; as, an estate of inheritance may be partible. “Make the molds partible.” Bacon. [ 1913 Webster ]

a. Capable of being participated or shared. [ R. ] Norris. [ 1913 Webster ]

n. A participator; a partaker. [ 1913 Webster ]

Participants in their . . . mysterious rites. Bp. Warburton. [ 1913 Webster ]

a. [ L. participans, p. pr. of participare: cf. F. participant. See Participate. ] Sharing; participating; having a share or part. Bacon. [ 1913 Webster ]

adv. In a participant manner. [ 1913 Webster ]

a. [ L. participatus, p. p. of participare to participate; pars, partis, part + capere to take. See Part, and Capacious. ] Acting in common; participating. [ R. ] Shak. [ 1913 Webster ]

v. i. [ imp. & p. p. Participated p. pr. & vb. n. Participating. ] To have a share in common with others; to take a part; to play a role; to partake; -- followed by in, formerly by of; as, to participate in a debate; to participate in a discussion. Shak. [ 1913 Webster ]

So would he participate of their wants. Hayward. [ 1913 Webster ]

Mine may come when men
With angels may participate. Milton. [ 1913 Webster ]

v. t. 1. To partake of; to share in; to receive a part of. [ R. ] [ 1913 Webster ]

Fit to participate all rational delight. Milton. [ 1913 Webster ]

2. To impart, or give, or share of. [ Obs. ] Drayton. [ 1913 Webster ]

adj. Taking part in an activity; as, the participating organizations.
Syn. -- active. [ WordNet 1.5 ]

n. [ F. participation, L. participatio. ] 1. The act or state of participating, or sharing in common with others; as, a participation in joy or sorrows. [ 1913 Webster ]

These deities are so by participation. Bp. Stillingfleet. [ 1913 Webster ]

What an honor, that God should admit us into such a blessed participation of himself! Atterbury. [ 1913 Webster ]

2. Distribution; division into shares. [ Obs. ] Raleigh. [ 1913 Webster ]

3. Community; fellowship; association. [ Obs. ] Shak. [ 1913 Webster ]

a. [ Cf. F. participatif. ] Capable of participating. [ 1913 Webster ]

n. [ L. ] One who participates, or shares with another; a partaker. [ 1913 Webster ]

adj. Affording the opportunity for individual participation; as, participatory democracy. [ WordNet 1.5 ]