Definition of Ypothesis. Meaning of Ypothesis. Synonyms of Ypothesis
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Definition of Ypothesis
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Hypothesis Hypothesis Hy*poth"e*sis, n.; pl. Hypotheses. [NL., fr. Gr.
? foundation, supposition, fr. ? to place under, ? under + ?
to put. See Hypo-, Thesis.]
1. A supposition; a proposition or principle which is
supposed or taken for granted, in order to draw a
conclusion or inference for proof of the point in
question; something not proved, but assumed for the
purpose of argument, or to account for a fact or an
occurrence; as, the hypothesis that head winds detain an
overdue steamer.
An hypothesis being a mere supposition, there are no
other limits to hypotheses than those of the human
imagination. --J. S. Mill.
2. (Natural Science) A tentative theory or supposition
provisionally adopted to explain certain facts, and to
guide in the investigation of others; hence, frequently
called a working hypothesis.
Syn: Supposition; assumption. See Theory.
Nebular hypothesis. See under Nebular.
Nebular hypothesis Nebular Neb"u*lar, a.
Of or pertaining to nebul[ae]; of the nature of, or
resembling, a nebula.
Nebular hypothesis, an hypothesis to explain the process of
formation of the stars and planets, presented in various
forms by Kant, Herschel, Laplace, and others. As formed by
Laplace, it supposed the matter of the solar system to
have existed originally in the form of a vast, diffused,
revolving nebula, which, gradually cooling and
contracting, threw off, in obedience to mechanical and
physical laws, succesive rings of matter, from which
subsequently, by the same laws, were produced the several
planets, satellites, and other bodies of the system. The
phrase may indicate any hypothesis according to which the
stars or the bodies of the solar system have been evolved
from a widely diffused nebulous form of matter.
Nebular hypothesis Hypothesis Hy*poth"e*sis, n.; pl. Hypotheses. [NL., fr. Gr.
? foundation, supposition, fr. ? to place under, ? under + ?
to put. See Hypo-, Thesis.]
1. A supposition; a proposition or principle which is
supposed or taken for granted, in order to draw a
conclusion or inference for proof of the point in
question; something not proved, but assumed for the
purpose of argument, or to account for a fact or an
occurrence; as, the hypothesis that head winds detain an
overdue steamer.
An hypothesis being a mere supposition, there are no
other limits to hypotheses than those of the human
imagination. --J. S. Mill.
2. (Natural Science) A tentative theory or supposition
provisionally adopted to explain certain facts, and to
guide in the investigation of others; hence, frequently
called a working hypothesis.
Syn: Supposition; assumption. See Theory.
Nebular hypothesis. See under Nebular.
theory or hypothesis Glacial Gla"cial, a. [L. glacialis, from glacies ice: cf. F.
glacial.]
1. Pertaining to ice or to its action; consisting of ice;
frozen; icy; esp., pertaining to glaciers; as, glacial
phenomena. --Lyell.
2. (Chem.) Resembling ice; having the appearance and
consistency of ice; -- said of certain solid compounds;
as, glacial phosphoric or acetic acids.
Glacial acid (Chem.), an acid of such strength or purity as
to crystallize at an ordinary temperature, in an icelike
form; as acetic or carbolic acid.
Glacial drift (Geol.), earth and rocks which have been
transported by moving ice, land ice, or icebergs; bowlder
drift.
Glacialepoch or period (Geol.), a period during which
the climate of the modern temperate regions was polar, and
ice covered large portions of the northern hemisphere to
the mountain tops.
Glacialtheory or hypothesis. (Geol.) See Glacier
theory, under Glacier.
