Webster's Dictionary, 1913

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Amphictyons noun plural [ Latin Amphictyones , Greek .... Prob. the word was orig. ... dwellers around, neighbors.] (Grecian Hist.) Deputies from the confederated states of ancient Greece to a congress or council. They considered both political and religious matters.

Amphictyony noun ; plural Amphictyonies [ Greek ....] (Grecian Hist.) A league of states of ancient Greece; esp. the celebrated confederation known as the Amphictyonic Council. Its object was to maintain the common interests of Greece.

Amphid noun [ Greek 'a`mfw both: confer French amphide .] (Chemistry) A salt of the class formed by the combination of an acid and a base, or by the union of two oxides, two sulphides, selenides, or tellurides, as distinguished from a haloid compound. [ R.] Berzelius.

Amphidisc noun [ Greek 'amfi` + di`skos a round plate.] (Zoology) A peculiar small siliceous spicule having a denticulated wheel at each end; -- found in freshwater sponges.

Amphidromical adjective [ Greek 'amfi`dromos running about or around.] Pertaining to an Attic festival at the naming of a child; -- so called because the friends of the parents carried the child around the hearth and then named it.

Amphigamous adjective [ Greek ... + ... marriage.] (Botany) Having a structure entirely cellular, and no distinct sexual organs; -- a term applied by De Candolle to the lowest order of plants.

Amphigean adjective [ Greek ... + ..., ..., the earth.] Extending over all the zones, from the tropics to the polar zones inclusive.

Amphigen noun [ Greek ... + -gen : confer French amphigène .] (Chemistry) An element that in combination produces amphid salt; -- applied by Berzelius to oxygen, sulphur, selenium, and tellurium. [ R.]

Amphigene noun (Min.) Leucite.

Amphigenesis noun [ Greek ... + ... generation.] (Biol.) Sexual generation; amphigony.

Amphigenous adjective (Botany) Increasing in size by growth on all sides, as the lichens.

Amphigonic adjective Pertaining to amphigony; sexual; as, amphigonic propagation. [ R.]

Amphigonous adjective [ Greek ... + ... a begetting.] Relating to both parents. [ R.]

Amphigony noun Sexual propagation. [ R.]

Amphigoric adjective [ See Amphigory .] Nonsensical; absurd; pertaining to an amphigory.

Amphigory noun [ French amphigouri , of uncertain derivation; perhaps from Greek ... + ... a circle.] A nonsense verse; a rigmarole, with apparent meaning, which on further attention proves to be meaningless. [ Written also amphigouri .]

Amphilogism, Amphilogy noun [ Greek ... + -logy .] Ambiguity of speech; equivocation. [ R.]

Amphimacer noun [ Latin amphimacru... , Greek ...; ... on both sides + ... long.] (Anc. Pros.) A foot of three syllables, the middle one short and the others long, as in cāst...tās . Andrews.

Amphineura noun plural [ New Latin , from ... + ... sinew, nerve.] (Zoology) A division of Mollusca remarkable for the bilateral symmetry of the organs and the arrangement of the nerves.

Amphioxus noun [ New Latin , from Greek ... + ... sharp.] (Zoology) A fishlike creature ( Amphioxus lanceolatus ), two or three inches long, found in temperature seas; -- also called the lancelet . Its body is pointed at both ends. It is the lowest and most generalized of the vertebrates, having neither brain, skull, vertebræ, nor red blood. It forms the type of the group Acrania , Leptocardia , etc.

Amphipneust noun [ Greek ... + ... one who breathes, ... to breathe.] (Zoology) One of a tribe of Amphibia, which have both lungs and gills at the same time, as the proteus and siren.

Amphipod noun (Zoology) One of the Amphipoda.

Amphipod, Amphipodan adjective (Zoology) Of or pertaining to the Amphipoda.

Amphipoda noun plural [ New Latin , FR. Greek ... + ..., ... foot.] (Zoology) A numerous group of fourteen -- footed Crustacea, inhabiting both fresh and salt water. The body is usually compressed laterally, and the anterior pairs or legs are directed downward and forward, but the posterior legs are usually turned upward and backward. The beach flea is an example. See Tetradecapoda and Arthrostraca .

Amphipodous adjective (Zoology) Of or pertaining to the Amphipoda.

Amphiprostyle adjective [ Latin amphiprostylos , Greek ... having a double prostyle: confer French amphiprostyle . See Prostyle .] (Architecture) Doubly prostyle; having columns at each end, but not at the sides. -- noun An amphiprostyle temple or edifice.

Amphirhina noun plural [ New Latin , from Greek ... + ..., ..., nose.] (Zoology) A name applied to the elasmobranch fishes, because the nasal sac is double.

Amphisbæna noun [ Latin , from Greek ...; ... on both ends + ... to go.]
1. A fabled serpent with a head at each end, moving either way. Milton.

2. (Zoology) A genus of harmless lizards, serpentlike in form, without legs, and with both ends so much alike that they appear to have a head at each, and ability to move either way. See Illustration in Appendix.

» The Gordius aquaticus , or hairworm , has been called an amphisbæna ; but it belongs among the worms.

Amphisbænoid adjective [ New Latin , from Latin amphisbaena + -oid .] (Zoology) Like or pertaining to the lizards of the genus Amphisbæna.

Amphiscii, Amphiscians noun plural [ Greek ... throwing a shadow both ways; ... + ... shadow.] The inhabitants of the tropic, whose shadows in one part of the year are cast to the north, and in the other to the south, according as the sun is south or north of their zenith.

Amphistomous adjective [ Greek ... + ... mouth.] (Zoology) Having a sucker at each extremity, as certain entozoa, by means of which they adhere.

Amphistylic adjective [ Greek ... + ... pillar, support.] (Anat.) Having the mandibular arch articulated with the hyoid arch and the cranium, as in the cestraciont sharks; -- said of a skull.

Amphitheater, Amphitheatre noun [ Latin amphitheatrum , from Greek ...; ... + ... theater: confer French amphithéâtre . See Theater .]
1. An oval or circular building with rising tiers of seats about an open space called the arena.

» The Romans first constructed amphitheaters for combats of gladiators and wild beasts.

2. Anything resembling an amphitheater in form; as, a level surrounded by rising slopes or hills, or a rising gallery in a theater.

Amphitheatral adjective [ Latin amphitheatralis : confer French amphithéâtral .] Amphitheatrical; resembling an amphitheater.

Amphitheatric, Amphitheatrical adjective [ Latin amphitheatricus .] Of, pertaining to, exhibited in, or resembling, an amphitheater.

Amphitheatrically adverb In the form or manner of an amphitheater.

Amphitrocha (ăm*fĭt"rokȧ) noun [ New Latin , from Greek 'amfi` + trocho`s a wheel.] (Zoology) A kind of annelid larva having both a dorsal and a ventral circle of special cilia.

Amphitropal (-p a l), Am*phit"ro*pous (- pŭs) adjective [ Greek 'amfi` + tre`pein to turn.] (Botany) Having the ovule inverted, but with the attachment near the middle of one side; half anatropous.

Amphiuma (ăm`fĭ*ū"mȧ) noun (Zoology) A genus of amphibians, inhabiting the Southern United States, having a serpentlike form, but with four minute limbs and two persistent gill openings; the Congo snake.

Amphopeptone noun [ Greek ... + English peptone .] (Physiol.) A product of gastric digestion, a mixture of hemipeptone and antipeptone.

Amphora noun ; plural Amophoræ [ Latin , from Greek ..., ..., a jar with two handles; ... + ... bearer, ... to bear. Confer Ampul .] Among the ancients, a two-handled vessel, tapering at the bottom, used for holding wine, oil, etc.

Amphoral adjective [ Latin amphoralis .] Pertaining to, or resembling, an amphora.

Amphoric adjective (Medicine) Produced by, or indicating, a cavity in the lungs, not filled, and giving a sound like that produced by blowing into an empty decanter; as, amphoric respiration or resonance.

Amphoteric adjective [ Greek ... both.] Partly one and partly the other; neither acid nor alkaline; neutral. [ R.] Smart.

Ample adjective [ French ample , Latin amplus , probably for ambiplus full on both sides, the last syllable akin to Latin plenus full. See Full , and confer Double .] Large; great in size, extent, capacity, or bulk; spacious; roomy; widely extended.

All the people in that ample house
Did to that image bow their humble knees.
Spenser.

2. Fully sufficient; abundant; liberal; copious; as, an ample fortune; ample justice.

3. Not contracted of brief; not concise; extended; diffusive; as, an ample narrative. Johnson.

Syn. -- Full; spacious; extensive; wide; capacious; abundant; plentiful; plenteous; copious; bountiful; rich; liberal; munificent. -- Ample , Copious , Abundant , Plenteous . These words agree in representing a thing as large , but under different relations, according to the image which is used. Ample implies largeness, producing a sufficiency or fullness of supply for every want; as, ample stores or resources, ample provision. Copious carries with it the idea of flow, or of collection at a single point; as, a copious supply of materials. " Copious matter of my song." Milton. Abundant and plenteous refer to largeness of quantity; as, abundant stores; plenteous harvests.

Amplectant adjective [ Latin amplecti to embrace.] (Botany) Clasping a support; as, amplectant tendrils. Gray.

Ampleness noun The state or quality of being ample; largeness; fullness; completeness.

Amplexation noun [ Latin amplexari to embrace.] An embrace. [ Obsolete]

An humble amplexation of those sacred feet.
Bp. Hall.

Amplexicaul adjective [ Latin amplexus , past participle of amplecti to encircle, to embrace + caulis stem: confer French amplexicaule .] (Botany) Clasping or embracing a stem, as the base of some leaves. Gray.