Ultraviolet
Ul′tra‐vi″o‐let (?), a. [Pref. ultra- + violet.] (Physics) Lying outside the visible spectrum at its violet end; — said of rays more refrangible than the extreme violet rays of ...
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.
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Ultrazodiacal
Ul′tra‐zo‐di″a‐cal (?), 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, ultr...
Ultroneous
Ul‐tro″ne‐ous (?), a. [L. ultroneus, from ultro to the further side, on his part, of one's own accord. See Ultra-.] Spontaneous; voluntary. Jer. Taylor. — Ul‐tro″ne‐ous‐ly, adv....
Ulula
‖Ul″u‐la (?), n.(Zoöl.) A genus of owls including the great gray owl (Ulula cinerea) of Arctic America, and other similar species. See Illust. of Owl.
Ululant
Ul″u‐lant (?), a. Howling; wailing.
Ululate
Ul″u‐late (?), v. i. [imp. & p. p.Ululated (?); p. pr. & vb. n.Ululating.] [L. ululatus, p. p. of ululare to howl, yell, shriek.] To howl, as a dog or a wolf; to wail; as, ulula...
Ululation
Ul′u‐la″tion (?), n. [L. ululatio.] A howling, as of a dog or wolf; a wailing.He may fright others with his ululation. Wither.
Ulva
‖Ul″va (?), n.(Bot.) A genus of thin papery bright green seaweeds including the kinds called sea lettuce.
Umbe
Um″be (?), prep. [AS. ymbe; akin to OHG. umbi, G. um. Cf. Amb-.] About. Layamon.
Umbecast
Um″be‐cast′ (?), v. i. [Umbe + cast.] To cast about; to consider; to ponder. Sir T. Malory.
Umbel
Um″bel (?), n. [L. umbella a little shadow, umbrella, dim. of umbra shade. See Umbrella.] (Bot.) A kind of flower cluster in which the flower stalks radiate from a common point,...
Umbellar
Um″bel‐lar (?), a.(Bot.) Of or pertaining to an umbel; having the form of an umbel.
Umbellate
{ Um″bel‐late (?), Um″bel‐la′ted (?), } a. [NL. umbellatus.] (Bot.) Bearing umbels; pertaining to an umbel; umbel-like; as, umbellate plants or flowers.
Umbellet
Um″bel‐let (?), n.(Bot.) A small or partial umbel; an umbellule.
Umbellic
Um‐bel″lic (?), a.(Chem.) Pertaining to, or obtained from, certain umbelliferous plants; as, umbellic acid.Umbellic acid. (Chem.) (a) Anisic acid. (b) A yellow powder obtained f...
Umbellifer
Um‐bel″li‐fer (?), n. [NL. See Umbelliferous.] (Bot.) A plant producing an umbel or umbels.
Umbelliferone
Um′bel‐lif″er‐one (?), n.(Chem.) A tasteless white crystalline substance, C9H6O3, found in the bark of a certain plant (Daphne Mezereum), and also obtained by the distillation o...
Umbelliferous
Um′bel‐lif″er‐ous (?), a. [Umbel + -ferous: cf. F. ombellifère.] (Bot.) (a) Producing umbels. (b) Of or pertaining to a natural order (Umbelliferæ) of plants, of which the parsl...
Umbellularia
‖Um‐bel′lu‐la″ri‐a (?), n. [NL. See Umbellule.] (Zoöl.) A genus of deep-sea alcyonaria consisting of a cluster of large flowerlike polyps situated at the summit of a long, slend...
Umbellule
Um″bel‐lule (?), n. [NL. umbellula, dim. of umbella: cf. F. ombellule.] (Bot.) An umbellet.
Umber
Um″ber (?), n. [F. ombre ocherous ore of iron, terre d'ombre, It. terra d'ombra, literally, earth of shadow or shade, L. umbra shadow, shade. Cf. Umber, 3 & 4, Umbrage.] 1. (Pai...
Umber (2)
Um″ber, a. Of or pertaining to umber; resembling umber; olive-brown; dark brown; dark; dusky.Their harps are of the umber shadeThat hides the blush of waking day. J. R. Drake.
Umber (3)
Um″ber, v. t. To color with umber; to shade or darken; as, to umber over one's face. B. Jonson.
Umbery
Um″ber‐y (?), a. Of or pertaining to umber; like umber; as, umbery gold.
Umbilic
Um‐bil″ic (?), n. [From L. umbilicus: cf. F. ombilic. See Navel.] 1. The navel; the center. “The umbilic of the world.” Sir T. Herbert.2. (Geom.) An umbilicus. See Umbilicus, 5 ...
Umbilic (2)
Um‐bil″ic (?), a.(Anat.) See Umbilical, 1.
Umbilical
Um‐bil″ic‐al (?), a. [Cf. F. ombilical. See Umbilic, n.] 1. (Anat.) Of or pertaining to an umbilicus, or umbilical cord; umbilic.2. Pertaining to the center; central. DeFoe.Umbi...