اسم ( noun )
مشتقات: octantal (adj.)
مشتقات: octantal (adj.)
• (1) تعریف: an eighth of a circle, or the arc or area it includes.
• (2) تعریف: a navigational instrument like the sextant but with an angle of only forty-five degrees.
• (3) تعریف: the position of one celestial body forty-five degrees away from another.
• (4) تعریف: any of the eight parts into which three-dimensional space is divided by three mutually perpendicular planes.