2. (Gram.) Used in only one person, especially only in the third
person, as some verbs; impersonal.
U`ni*per"so*nal*ist, n. (Theol.) One who believes that the Deity is
unipersonal.
U*niph"o*nous (?), a. [Uni- + Gr. &?; sound.] Having but one sound, as
the drum. [R.]
U*nip"li*cate (?), a. [Uni- + plicate.] Having, or consisting of, but
one fold.
U`ni*po"lar (?), a. [Uni- + polar.] 1. (Physics) Having, or acting by
means of, one pole only.
2. (Anat.) Having but one pole or process; - - applied to those
ganglionic nerve cells which have but one radiating process; — opposed
to multipolar.
Unipolar induction (Elec.), induction, as in a conducting circuit, by
only one pole of a magnet. — Unipolar stimulation (Physiol.), the
simulation sometimes produced when one electrode of an induction
apparatus is applied to a nerve; — called also unipolar induction
action. Du Bois-Reymond.
U*nique" (?), a. [F. unique; cf. It. unico; from L. unicus, from unus
one. See One.] Being without a like or equal; unmatched; unequaled;
unparalleled; single in kind or excellence; sole. — U*nique"ly, adv. —
U*nique"ness, n.
U*nique", n. A thing without a like; something unequaled or
unparalleled. [R.]
The phenix, the unique pf birds.
De Quincey.
U*niq"ui*ty (?), n. The quality or state of being unique; uniqueness.
[R.] Walpole.
U`ni*ra"di*a`ted (?), a. [Uni- + radiated.] Having but one ray.
U`ni*ra"mous (?), a. [Uni- + L. ramus branch.] (Biol.) Having but one
branch.
U`ni*sep"tate (?), a. [Uni- + septate.] (Bot.) Having but one septum,
or partition; — said of two-celled fruits, such as the silicles of
cruciferous plants.
U`ni*se"ri*al (?), a. [Uni- + serial.] Having only one row or series.
U`ni*se"ri*ate (?), a. [Uni- + seriate.] Having one line or series;
uniserial. — U`ni*se"ri*ate*ly, adv.
U`ni*sex"u*al (?), a. [Uni- + sexual: cf. F. unisexuel.] (Biol.) Having
one sex only, as plants which have the male and female flowers on
separate individuals, or animals in which the sexes are in separate
individuals; diœcious; — distinguished from bisexual, or hermaphrodite.
See Diœcious.
U`ni*sil"i*cate (?), n. [Uni- + silicate.] (Min.) A salt of
orthosilicic acid, H4SiO4; — so called because the ratio of the oxygen
atoms united to the basic metals and silicon respectively is 1:1; for
example, Mg2SiO4 or 2MgO.SiO2.
U"ni*son (?; 277), n. [LL. unisonus having the same sound; L. unus one
+ sonus a sound: cf. F. unisson, It. unisono. See One, and Sound a
noise.] 1. Harmony; agreement; concord; union.
2. (Mus.) Identity in pitch; coincidence of sounds proceeding from an
equality in the number of vibrations made in a given time by two or
more sonorous bodies. Parts played or sung in octaves are also said to
be in unison, or in octaves.
If two cords of the same substance have equal length, thickness, and
tension, they are said to be in unison, and their sounds will be in
unison. Sounds of very different qualities and force may be in unison,
as the sound of a bell may be in unison with a sound of a flute.
Unison, then, consists in identity of pitch alone, irrespective of
quality of sound, or timbre, whether of instruments or of human voices.
A piece or passage is said to be sung or played in unison when all the
voices or instruments perform the same part, in which sense unison is
contradistinguished from harmony.