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a. Running in a contrary direction. Hammond. [ 1913 Webster ]

n. pl. (Geom.) Straight lines or planes which make angles in some respect opposite in character to those made by parallel lines or planes. [ 1913 Webster ]

a. (Med.) Good against paralysis. -- n. A medicine for paralysis. [ 1913 Webster ]

a. Antiparalytic. [ 1913 Webster ]

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 ]

n. [ Pref. anti- + pasch. ] (Eccl.) The Sunday after Easter; Low Sunday. [ Webster 1913 Suppl. ]

{ } a. Having a natural contrariety, or constitutional aversion, to a thing; characterized by antipathy; -- often followed by to. Fuller. [ 1913 Webster ]

a. [ NL. antipathicus, Gr. &unr_; of opposite feelings. ] (Med.) Belonging to antipathy; opposite; contrary; allopathic. [ 1913 Webster ]

n. One who has an antipathy. [ R. ] “Antipathist of light.” Coleridge. [ 1913 Webster ]

v. i. To feel or show antipathy. [ R. ] [ 1913 Webster ]

a. Having a natural contrariety; adverse; antipathetic. [ Obs. ] Beau. & Fl. [ 1913 Webster ]

n.; pl. Antipathies [ L. antipathia, Gr. 'antipa`qeia; 'anti` against + paqei^n to suffer. Cf. F. antipathie. See Pathos. ] 1. Contrariety or opposition in feeling; settled aversion or dislike; repugnance; distaste. [ 1913 Webster ]

Inveterate antipathies against particular nations, and passionate attachments to others, are to be avoided. Washington. [ 1913 Webster ]

2. Natural contrariety; incompatibility; repugnancy of qualities; as, oil and water have antipathy. [ 1913 Webster ]

A habit is generated of thinking that a natural antipathy exists between hope and reason. I. Taylor. [ 1913 Webster ]

☞ Antipathy is opposed to sympathy. It is followed by to, against, or between; also sometimes by for. [ 1913 Webster ]

Syn. -- Hatred; aversion; dislike; disgust; distaste; enmity; ill will; repugnance; contrariety; opposition. See Dislike. [ 1913 Webster ]

v. t. [ imp. & p. p. Constipated; p. pr. & vb. n. Constipating. ] [ L. constipatus, p. p. of constipare; con- + stipare to crowd together. See Costive. ] 1. To crowd or cram into a narrow compass; to press together or condense. [ Obs. ] [ 1913 Webster ]

Of cold the property is to condense and constipate. Bacon. [ 1913 Webster ]

2. To stop (a channel) by filling it, and preventing passage through it; as, to constipate the capillary vessels. [ 1913 Webster ]

3. (Med.) To render costive; to cause constipation in. [ 1913 Webster ]

adj. having difficult or incomplete or infrequent evacuation of the bowels; costive. [ WordNet 1.5 ]

adj. causing constipation.
Syn. -- binding. [ WordNet 1.5 ]

n. [ L. constipatio a crowding together: cf. F. constipation. ] 1. Act of crowding anything into a less compass, or the state of being crowded or pressed together; condensation. [ Obs. ] [ 1913 Webster ]

Fullness of matter, or a pretty close constipation . . . of its particles. Boyle. [ 1913 Webster ]

2. A state of the bowels in which the evacuations are infrequent and difficult, or the intestines become filled with hardened fæces; costiveness. [ 1913 Webster ]

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

a. [ Multi- + L. parere to produce: cf. F. multipare. ] Producing many, or more than one, at a birth. [ 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. [ L. obstipatio a close pressure; ob (see Ob-) + stipare to press. ] 1. The act of stopping up, as a passage. [ Obs. ] Bailey. [ 1913 Webster ]

2. (Med.) Extreme constipation. [ Obs. ] Hooper. [ 1913 Webster ]

a. [ Seta + L. papere to produce. ] (Zool.) Producing setae; -- said of the organs from which the setae of annelids arise. [ 1913 Webster ]

a. [ L. totus all, whole + E. palmate. ] (Zool.) Having all four toes united by a web; -- said of certain sea birds, as the pelican and the gannet. See Illust. under Aves. [ 1913 Webster ]