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The Collaborative International Dictionary of English v.0.48 (gcide)

Oblique \Ob*lique"\, a. [F., fr. L. obliquus; ob (see {Ob-})
liquis oblique; cf. licinus bent upward, Gr. le`chrios
slanting.] [Written also {oblike}.]
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1. Not erect or perpendicular; neither parallel to, nor at
right angles from, the base; slanting; inclined.
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It has a direction oblique to that of the former
motion. --Cheyne.
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2. Not straightforward; indirect; obscure; hence,
disingenuous; underhand; perverse; sinister.
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The love we bear our friends . . .
Hath in it certain oblique ends. --Drayton.
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This mode of oblique research, when a more direct
one is denied, we find to be the only one in our
power. --De Quincey.
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Then would be closed the restless, oblique eye.
That looks for evil, like a treacherous spy.
--Wordworth.
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3. Not direct in descent; not following the line of father
and son; collateral.
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His natural affection in a direct line was strong,
in an oblique but weak. --Baker.
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{Oblique angle}, {Oblique ascension}, etc. See under {Angle},
{Ascension}, etc.

{Oblique arch} (Arch.), an arch whose jambs are not at right
angles with the face, and whose intrados is in consequence
askew.

{Oblique bridge}, a skew bridge. See under {Bridge}, n.

{Oblique case} (Gram.), any case except the nominative. See
{Case}, n.

{Oblique circle} (Projection), a circle whose plane is
oblique to the axis of the primitive plane.

{Oblique fire} (Mil.), a fire the direction of which is not
perpendicular to the line fired at.

{Oblique flank} (Fort.), that part of the curtain whence the
fire of the opposite bastion may be discovered. --Wilhelm.

{Oblique leaf}. (Bot.)
(a) A leaf twisted or inclined from the normal position.
(b) A leaf having one half different from the other.

{Oblique line} (Geom.), a line that, meeting or tending to
meet another, makes oblique angles with it.

{Oblique motion} (Mus.), a kind of motion or progression in
which one part ascends or descends, while the other
prolongs or repeats the same tone, as in the accompanying
example.

{Oblique muscle} (Anat.), a muscle acting in a direction
oblique to the mesial plane of the body, or to the
associated muscles; -- applied especially to two muscles
of the eyeball.

{Oblique narration}. See {Oblique speech}.

{Oblique planes} (Dialing), planes which decline from the
zenith, or incline toward the horizon.

{Oblique sailing} (Naut.), the movement of a ship when she
sails upon some rhumb between the four cardinal points,
making an oblique angle with the meridian.

{Oblique speech} (Rhet.), speech which is quoted indirectly,
or in a different person from that employed by the
original speaker.

{Oblique sphere} (Astron. & Geog.), the celestial or
terrestrial sphere when its axis is oblique to the horizon
of the place; or as it appears to an observer at any point
on the earth except the poles and the equator.

{Oblique step} (Mil.), a step in marching, by which the
soldier, while advancing, gradually takes ground to the
right or left at an angle of about 25[deg]. It is not now
practiced. --Wilhelm.

{Oblique system of coordinates} (Anal. Geom.), a system in
which the coordinate axes are oblique to each other.
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Oblique \Ob*lique"\, n. (Geom.)
An oblique line.
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Oblique \Ob*lique"\, v. i. [imp. & p. p. {Obliqued}; p. pr. &
vb. n. {Obliquing}.]
1. To deviate from a perpendicular line; to move in an
oblique direction.
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Projecting his person towards it in a line which
obliqued from the bottom of his spine. --Sir. W.
Scott.
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2. (Mil.) To march in a direction oblique to the line of the
column or platoon; -- formerly accomplished by oblique
steps, now by direct steps, the men half-facing either to
the right or left.
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