sextant
noun
1 sextant
A unit of angular distance equal to 60 degrees.
Roget 244:
angularity,
angularness†;
aduncity†;
angle,
cusp,
bend;
fold
etc.
258;
notch
etc.
257;
fork,
bifurcation.
elbow,
knee,
knuckle,
ankle,
groin,
crotch,
crutch,
crane,
fluke,
scythe,
sickle,
zigzag,
kimbo†,
akimbo.
corner,
nook,
recess,
niche,
oriel [Arch.],
coign†.
right angle
etc.
(perpendicular)
216.1,
212;
obliquity
etc.
217;
angle of 45 degrees,
miter;
acute angle,
obtuse angle,
salient angle,
reentering angle,
spherical angle.
angular measurement,
angular elevation,
angular distance,
angular velocity;
trigonometry,
goniometry;
altimetry†;
clinometer,
graphometer†,
goniometer;
theodolite;
sextant,
quadrant;
dichotomy.
triangle,
trigon†,
wedge;
rectangle,
square,
lozenge,
diamond;
rhomb,
rhombus;
quadrangle,
quadrilateral;
parallelogram;
quadrature;
polygon,
pentagon,
hexagon,
heptagon,
octagon,
oxygon†,
decagon.
pyramid,
cone.
Platonic bodies;
cube,
rhomboid;
tetrahedron,
pentahedron,
hexahedron,
octahedron,
dodecahedron,
icosahedron,
eicosahedron;
prism,
pyramid;
parallelopiped;
curb roof,
gambrel roof,
mansard roof.
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Roget 247:
circularity,
roundness;
rotundity
etc.
249.
circle,
circlet,
ring,
areola,
hoop,
roundlet†,
annulus,
annulet†,
bracelet,
armlet;
ringlet;
eye,
loop,
wheel;
cycle,
orb,
orbit,
rundle,
zone,
belt,
cordon,
band;
contrate wheel†,
crown wheel;
hub;
nave;
sash,
girdle,
cestus†,
cincture,
baldric,
fillet,
fascia,
wreath,
garland;
crown,
corona,
coronet,
chaplet,
snood,
necklace,
collar;
noose,
lasso,
lassoo†.
ellipse,
oval,
ovule;
ellipsoid,
cycloid;
epicycloid [Geom.],
epicycle;
semicircle;
quadrant,
sextant,
sector.
sphere
etc.
249.
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Polish: sekstans
2 sextant
A measuring instrument for measuring the angular distance between celestial objects; resembles an octant.
Dutch: astrolabium, sextant, spiegelboog
Polish: sekstans, sekstant
Moby thesaurus: astrolabe, astronavigation, azimuth circle, azimuth compass, bevel, bevel protractor, bevel square, celestial navigation, chronometer, clinometer, coastwise navigation, consolan, crescent, dead reckoning, fix, goniometer, graphometer, half circle, hemicycle, line of position, loran, pantometer, pilotage, plane sailing, point-to-point navigation, protractor, quadrant, radar, radio beacon, radio navigation, radiogoniometer, sector, semicircle, shoran, sofar, sonar, tables, theodolite, transit, transit circle, transit instrument, transit theodolite ... show more.
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