great cardiac vein n.
A tributary of the coronary sinus that begins at the apex of the heart and runs in the anterior interventricular sulcus.
- Great cerebral vein
great cerebral vein n. A vein formed by the junction of the two internal cerebral veins and passes between the corpus callosum and the pineal gland to continue into the straight sinus.
noun 1. a circle on a spherical surface such that the plane containing the circle passes through the center of the sphere. Compare . 2. a circle of which a segment represents the shortest distance between two points on the surface of the earth. noun 1. a circular section of a sphere that has a […]
- Great-circle sailing
[greyt-sur-kuh l] /ˈgreɪtˈsɜr kəl/ noun, Navigation. 1. sailing between two points more or less according to an arc of a great circle, in practice almost always using a series of rhumb lines of different bearings to approximate the arc, whose own bearing changes constantly unless it coincides with a meridian or the equator.
- Great-circle track
noun 1. the route of a ship following the arc of a great circle, appearing as a curved line on a Mercator chart and as a straight line on a gnomonic chart.