{ } a. [ L. cultratus knife-shaped, fromculter, cultri, knife. ] (Bot. & Zool.) Sharp-edged and pointed; shaped like a pruning knife, as the beak of certain birds. [ 1913 Webster ]

‖ [ L., no further; ne no, not + plus more + ultra beyond. ] 1. The uttermost point to which one can go or attain; hence, the summit of achievement; the highest point or degree; the acme. [ Webster 1913 Suppl. ]

2. A prohibition against proceeding further; an insuperable obstacle or limiting condition. [ Obs. or R. ] [ Webster 1913 Suppl. ]

{ } a. (Zool.) Having a form resembling that of a colter, or straight on one side and curved on the other. [ 1913 Webster ]

a. [ See Ultra-. ] Going beyond others, or beyond due limit; extreme; fanatical; uncompromising; as, an ultra reformer; ultra measures. [ 1913 Webster ]

n. One who advocates extreme measures; an ultraist; an extremist; a radical. Brougham. [ 1913 Webster ]

a. A prefix from the Latin ultra beyond (see Ulterior), having in composition the signification beyond, on the other side, chiefly when joined with words expressing relations of place; as, ultramarine, ultramontane, ultramundane, ultratropical, etc. In other relations it has the sense of excessively, exceedingly, beyond what is common, natural, right, or proper; as, ultraconservative; ultrademocratic, ultradespotic, ultraliberal, ultraradical, etc. [ 1913 Webster ]

a. [ Pref. ultra + gaseous. ] (Physics) Having the properties exhibited by gases under very low pressures (one millionth of an atmosphere or less). Matter under this condition, which has been termed the fourth state of matter, is sometimes called radiant matter. [ Webster 1913 Suppl. ]

n. Outrage. [ Obs. ] [ 1913 Webster ]

n. [ Cf. F. ultraïsme. See Ultra-. ] The principles of those who advocate extreme measures, as radical reform, and the like. Dr. H. More. [ 1913 Webster ]

n. One who pushes a principle or measure to extremes; an extremist; a radical; an ultra. [ 1913 Webster ]

a. [ Pref. ultra- + marine. ] Situated or being beyond the sea. Burke. [ 1913 Webster ]

n. [ Cf. Sp. ultramarino. So called because the lapis lazuli was originally brought from beyond the sea, -- from Asia. ] (Chem.) A blue pigment formerly obtained by powdering lapis lazuli, but now produced in large quantities by fusing together silica, alumina, soda, and sulphur, thus forming a glass, colored blue by the sodium polysulphides made in the fusion. Also used adjectively. [ 1913 Webster ]

Green ultramarine, a green pigment obtained as a first product in the manufacture of ultramarine, into which it is changed by subsequent treatment. --
Ultramarine ash or
Ultramarine ashes (Paint.), a pigment which is the residuum of lapis lazuli after the ultramarine has been extracted. It was used by the old masters as a middle or neutral tint for flesh, skies, and draperies, being of a purer and tenderer gray than that produced by the mixture of more positive colors. Fairholt. [ 1913 Webster ]

a. [ LL. ultramontanus; L. ultra beyond + montanus belonging to a mountain, from mons, montis, mountain: cf. F. ultramontain, It. ultramontano. See Ultra-, and Mountain. ] Being beyond the mountains; specifically, being beyond the Alps, in respect to the one who speaks. [ 1913 Webster ]

☞ This term was first applied, somewhat contemptuously, by the Italians, to the nations north of the Alps, especially the Germans and French, their painters, jurists, etc. At a later period, the French and Germans applied it to the Italians. It is now more particularly used in respect to religious matters; and ultramontane doctrines, when spoken of north of the Alps, denote the extreme views of the pope's rights and supremacy maintained by Bellarmin and other Italian writers. [ 1913 Webster ]

n. 1. One who resides beyond the mountains, especially beyond the Alps; a foreigner. [ 1913 Webster ]

2. One who maintains extreme views favoring the pope's supremacy. See Ultramontanism. [ 1913 Webster ]

n. [ Cf. F. ultramontanisme. ] The principles of those within the Roman Catholic Church who maintain extreme views favoring the pope's supremacy; -- so used by those living north of the Alps in reference to the Italians; -- rarely used in an opposite sense, as referring to the views of those living north of the Alps and opposed to the papal claims. Cf. Gallicanism. [ 1913 Webster ]

n. One who upholds ultramontanism. [ 1913 Webster ]

a. [ L. ultramundanus. See Ultra-, and Mundane. ] Being beyond the world, or beyond the limits of our system. Boyle. [ 1913 Webster ]

a. [ Pref. ultra- + red. ] (Physics) Situated beyond or below the red rays; as, the ultrated rays of the spectrum, which are less refrangible than the red. [ 1913 Webster ]

a. [ Pref. ultra- + tropical. ] Situated beyond, or outside of, the tropics; extratropical; also, having an excessively tropical temperature; warmer than the tropics. [ 1913 Webster ]

a. [ Pref. ultra- + violet. ] (Physics) Lying outside the visible spectrum at its blue-violet end; -- said of light more refrangible (i. e. having a shorter wavelength) than the extreme violet rays of the visible spectrum. Electromagnetic radiation with wavelengths shorter than those of ultrviolet light are not usually considered as light waves, but are classified differently. The ultraviolet region of the electromagnetic spectrum is generally considered as comprising those electromagnetic emissions with wavelengths lying between those of visible light and those of X-rays, i. e. between 4000 Angstroms and 100 Angstroms. [ 1913 Webster +PJC ]

‖[ Law Latin, from L. prep. ultra beyond + vires, pl. of. vis strength. ] Beyond power; transcending authority; -- a phrase used frequently in relation to acts or enactments by corporations in excess of their chartered or statutory rights. [ 1913 Webster ]

a. [ Pref. ultra- + zodiacal. ] (Astron.) Outside the zodiac; being in that part of the heavens that is more than eight degrees from the ecliptic; as, ultrazodiacal planets, that is, those planets which in part of their orbits go beyond the zodiac. [ 1913 Webster ]